222121112202012 has 24 divisors (see below), whose sum is σ = 522065679777936. Its totient is φ = 73499930071168.

The previous prime is 222121112202001. The next prime is 222121112202019. The reversal of 222121112202012 is 210202211121222.

222121112202012 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 222121112202012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222121112202019) 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, 67555081143 + ... + 67555084430.

It is an arithmetic number, because the mean of its divisors is an integer number (21752736657414).

Almost surely, 2^{222121112202012} is an apocalyptic number.

It is an amenable number.

222121112202012 is an abundant number, since it is smaller than the sum of its proper divisors (299944567575924).

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

222121112202012 is a wasteful number, since it uses less digits than its factorization.

222121112202012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135110165717 (or 135110165715 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 222121112202012 its reverse (210202211121222), we get a palindrome (432323323323234).

The spelling of 222121112202012 in words is "two hundred twenty-two trillion, one hundred twenty-one billion, one hundred twelve million, two hundred two thousand, twelve".