221012122002 has 32 divisors (see below), whose sum is σ = 505222537344. Its totient is φ = 63139824000.

The previous prime is 221012121989. The next prime is 221012122043. The reversal of 221012122002 is 200221210122.

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, 150102 + ... + 681582.

It is an arithmetic number, because the mean of its divisors is an integer number (15788204292).

Almost surely, 2^221012122002 is an apocalyptic number.

221012122002 is an abundant number, since it is smaller than the sum of its proper divisors (284210415342).

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

221012122002 is a wasteful number, since it uses less digits than its factorization.

221012122002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541394.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 221012122002 its reverse (200221210122), we get a palindrome (421233332124).

The spelling of 221012122002 in words is "two hundred twenty-one billion, twelve million, one hundred twenty-two thousand, two".