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211404000021 = 3174145176471
BaseRepresentation
bin1100010011100010101…
…0010000101100010101
3202012200002220220120120
43010320222100230111
511430423411000041
6241041225222153
721162534231324
oct3047052205425
9665602826516
10211404000021
1181724057205
1234b7a931959
1316c20b58996
14a3368b80bb
155774717366
hex3138a90b15

211404000021 has 8 divisors (see below), whose sum is σ = 298452705984. Its totient is φ = 132645647040.

The previous prime is 211403999981. The next prime is 211404000029. The reversal of 211404000021 is 120000404112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 211404000021 - 29 = 211403999509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211404000029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2072588185 + ... + 2072588286.

It is an arithmetic number, because the mean of its divisors is an integer number (37306588248).

Almost surely, 2211404000021 is an apocalyptic number.

It is an amenable number.

211404000021 is a deficient number, since it is larger than the sum of its proper divisors (87048705963).

211404000021 is a wasteful number, since it uses less digits than its factorization.

211404000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4145176491.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 211404000021 its reverse (120000404112), we get a palindrome (331404404133).

The spelling of 211404000021 in words is "two hundred eleven billion, four hundred four million, twenty-one", and thus it is an aban number.

Divisors: 1 3 17 51 4145176471 12435529413 70468000007 211404000021