121012210210212 has 18 divisors (see below), whose sum is σ = 305891975809238. Its totient is φ = 40337403403392.

The previous prime is 121012210210193. The next prime is 121012210210291. The reversal of 121012210210212 is 212012012210121.

121012210210212 is a `hidden beast` number, since 1 + 21 + 0 + 1 + 221 + 0 + 210 + 212 = 666.

It can be written as a sum of positive squares in only one way, i.e., 118516840263936 + 2495369946276 = 10886544^2 + 1579674^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1680725141773 + ... + 1680725141844.

Almost surely, 2^{121012210210212} is an apocalyptic number.

121012210210212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121012210210212 is an abundant number, since it is smaller than the sum of its proper divisors (184879765599026).

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

121012210210212 is a wasteful number, since it uses less digits than its factorization.

121012210210212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3361450283627 (or 3361450283622 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 121012210210212 its reverse (212012012210121), we get a palindrome (333024222420333).

The spelling of 121012210210212 in words is "one hundred twenty-one trillion, twelve billion, two hundred ten million, two hundred ten thousand, two hundred twelve".