121022230212 has 36 divisors (see below), whose sum is σ = 329449405740. Its totient is φ = 37237609152.

The previous prime is 121022230193. The next prime is 121022230213. The reversal of 121022230212 is 212032220121.

It can be written as a sum of positive squares in 2 ways, for example, as 26838302976 + 94183927236 = 163824^2 + 306894^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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

It is not an unprimeable number, because it can be changed into a prime (121022230213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 129296787 + ... + 129297722.

Almost surely, 2^121022230212 is an apocalyptic number.

121022230212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121022230212 is an abundant number, since it is smaller than the sum of its proper divisors (208427175528).

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

121022230212 is a wasteful number, since it uses less digits than its factorization.

121022230212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258594532 (or 258594527 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 121022230212 its reverse (212032220121), we get a palindrome (333054450333).

The spelling of 121022230212 in words is "one hundred twenty-one billion, twenty-two million, two hundred thirty thousand, two hundred twelve".