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21220121002222 = 2611499059128861
BaseRepresentation
bin1001101001100101100011…
…10001100100000011101110
32210010121211201101102201201
410310302301301210003232
510240132301434032342
6113044220005400114
74320050244305662
oct464626161440356
983117751342651
1021220121002222
11684144810998a
12246872770903a
13bac0833614cc
145350b8b688a2
1526beb623edb7
hex134cb1c640ee

21220121002222 has 32 divisors (see below), whose sum is σ = 32572963188000. Its totient is φ = 10364859254400.

The previous prime is 21220121002217. The next prime is 21220121002307. The reversal of 21220121002222 is 22220012102212.

It is a self number, because there is not a number n which added to its sum of digits gives 21220121002222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 164610072 + ... + 164738932.

It is an arithmetic number, because the mean of its divisors is an integer number (1017905099625).

Almost surely, 221220121002222 is an apocalyptic number.

21220121002222 is a deficient number, since it is larger than the sum of its proper divisors (11352842185778).

21220121002222 is a wasteful number, since it uses less digits than its factorization.

21220121002222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138132.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 21220121002222 its reverse (22220012102212), we get a palindrome (43440133104434).

The spelling of 21220121002222 in words is "twenty-one trillion, two hundred twenty billion, one hundred twenty-one million, two thousand, two hundred twenty-two".

Divisors: 1 2 61 122 149 298 9059 9089 18118 18178 128861 257722 552599 1105198 1349791 2699582 7860521 15721042 19200289 38400578 82337251 164674502 1167351799 1171217629 2334703598 2342435258 71208459739 142416919478 173935418051 347870836102 10610060501111 21220121002222