121221010122222 has 32 divisors (see below), whose sum is σ = 245196480304800. Its totient is φ = 39948039262208.

The previous prime is 121221010122181. The next prime is 121221010122263. The reversal of 121221010122222 is 222221010122121.

It is an interprime number because it is at equal distance from previous prime (121221010122181) and next prime (121221010122263).

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, 9757683 + ... + 18375374.

It is an arithmetic number, because the mean of its divisors is an integer number (7662390009525).

Almost surely, 2^{121221010122222} is an apocalyptic number.

121221010122222 is an abundant number, since it is smaller than the sum of its proper divisors (123975470182578).

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

121221010122222 is a wasteful number, since it uses less digits than its factorization.

121221010122222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28141220.

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

Adding to 121221010122222 its reverse (222221010122121), we get a palindrome (343442020244343).

The spelling of 121221010122222 in words is "one hundred twenty-one trillion, two hundred twenty-one billion, ten million, one hundred twenty-two thousand, two hundred twenty-two".