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121020222 = 23198710151
BaseRepresentation
bin1110011011010…
…01111100111110
322102201110112110
413031221330332
5221440121342
620001514450
72666440431
oct715517476
9272643473
10121020222
1162349314
1234642a26
131c0c33cb
1412103818
15a957c9c
hex7369f3e

121020222 has 16 divisors (see below), whose sum is σ = 242186112. Its totient is φ = 40315800.

The previous prime is 121020209. The next prime is 121020241. The reversal of 121020222 is 222020121.

It is a junction number, because it is equal to n+sod(n) for n = 121020198 and 121020207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6847 + ... + 16997.

It is an arithmetic number, because the mean of its divisors is an integer number (15136632).

Almost surely, 2121020222 is an apocalyptic number.

121020222 is an abundant number, since it is smaller than the sum of its proper divisors (121165890).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121020222 is a wasteful number, since it uses less digits than its factorization.

121020222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12143.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 121020222 is about 11000.9191434171. The cubic root of 121020222 is about 494.6362964485.

Adding to 121020222 its reverse (222020121), we get a palindrome (343040343).

The spelling of 121020222 in words is "one hundred twenty-one million, twenty thousand, two hundred twenty-two".

Divisors: 1 2 3 6 1987 3974 5961 10151 11922 20302 30453 60906 20170037 40340074 60510111 121020222