121211010212202 has 96 divisors (see below), whose sum is σ = 279152395913664. Its totient is φ = 39406563504000.

The previous prime is 121211010212189. The next prime is 121211010212203. The reversal of 121211010212202 is 202212010112121.

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 (121211010212203) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15139299 + ... + 21716822.

It is an arithmetic number, because the mean of its divisors is an integer number (2907837457434).

Almost surely, 2^{121211010212202} is an apocalyptic number.

121211010212202 is an abundant number, since it is smaller than the sum of its proper divisors (157941385701462).

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

121211010212202 is a wasteful number, since it uses less digits than its factorization.

121211010212202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36856306 (or 36856294 counting only the distinct ones).

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

Adding to 121211010212202 its reverse (202212010112121), we get a palindrome (323423020324323).

The spelling of 121211010212202 in words is "one hundred twenty-one trillion, two hundred eleven billion, ten million, two hundred twelve thousand, two hundred two".