2212122221010 has 128 divisors (see below), whose sum is σ = 6726453269760. Its totient is φ = 512491650048.

The previous prime is 2212122220999. The next prime is 2212122221039. The reversal of 2212122221010 is 101222212122.

It is a happy number.

2212122221010 is a `hidden beast` number, since 221 + 2 + 1 + 222 + 210 + 10 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 18476632 + ... + 18595971.

It is an arithmetic number, because the mean of its divisors is an integer number (52550416170).

Almost surely, 2^{2212122221010} is an apocalyptic number.

2212122221010 is an abundant number, since it is smaller than the sum of its proper divisors (4514331048750).

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

2212122221010 is a wasteful number, since it uses less digits than its factorization.

2212122221010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37072649 (or 37072643 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2212122221010 its reverse (101222212122), we get a palindrome (2313344433132).

The spelling of 2212122221010 in words is "two trillion, two hundred twelve billion, one hundred twenty-two million, two hundred twenty-one thousand, ten".