102212211221012 has 6 divisors (see below), whose sum is σ = 178871369636778. Its totient is φ = 51106105610504.

The previous prime is 102212211220909. The next prime is 102212211221069. The reversal of 102212211221012 is 210122112212201.

It can be written as a sum of positive squares in only one way, i.e., 96191881600516 + 6020329620496 = 9807746^2 + 2453636^2 .

It is a super-2 number, since 2×102212211221012² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12776526402623 + ... + 12776526402630.

It is an arithmetic number, because the mean of its divisors is an integer number (29811894939463).

Almost surely, 2^{102212211221012} is an apocalyptic number.

It is an amenable number.

102212211221012 is a deficient number, since it is larger than the sum of its proper divisors (76659158415766).

102212211221012 is a wasteful number, since it uses less digits than its factorization.

102212211221012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25553052805257 (or 25553052805255 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 102212211221012 its reverse (210122112212201), we get a palindrome (312334323433213).

The spelling of 102212211221012 in words is "one hundred two trillion, two hundred twelve billion, two hundred eleven million, two hundred twenty-one thousand, twelve".