121201212102222 has 32 divisors (see below), whose sum is σ = 277031766074112. Its totient is φ = 34628864727744.

The previous prime is 121201212102211. The next prime is 121201212102283. The reversal of 121201212102222 is 222201212102121.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31660833 + ... + 35281875.

It is an arithmetic number, because the mean of its divisors is an integer number (8657242689816).

Almost surely, 2^{121201212102222} is an apocalyptic number.

121201212102222 is an abundant number, since it is smaller than the sum of its proper divisors (155830553971890).

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

121201212102222 is a wasteful number, since it uses less digits than its factorization.

121201212102222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4417992.

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

Adding to 121201212102222 its reverse (222201212102121), we get a palindrome (343402424204343).

The spelling of 121201212102222 in words is "one hundred twenty-one trillion, two hundred one billion, two hundred twelve million, one hundred two thousand, two hundred twenty-two".