221002112122002 has 16 divisors (see below), whose sum is σ = 491115804715680. Its totient is φ = 73667370707316.

The previous prime is 221002112121937. The next prime is 221002112122021. The reversal of 221002112122002 is 200221211200122.

It is a happy number.

221002112122002 is a `hidden beast` number, since 2 + 210 + 0 + 211 + 21 + 220 + 0 + 2 = 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 7 ways as a sum of consecutive naturals, for example, 2046315852928 + ... + 2046315853035.

It is an arithmetic number, because the mean of its divisors is an integer number (30694737794730).

Almost surely, 2^{221002112122002} is an apocalyptic number.

221002112122002 is an abundant number, since it is smaller than the sum of its proper divisors (270113692593678).

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

221002112122002 is a wasteful number, since it uses less digits than its factorization.

221002112122002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4092631705974 (or 4092631705968 counting only the distinct ones).

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

Adding to 221002112122002 its reverse (200221211200122), we get a palindrome (421223323322124).

The spelling of 221002112122002 in words is "two hundred twenty-one trillion, two billion, one hundred twelve million, one hundred twenty-two thousand, two".