21220101112002 has 64 divisors (see below), whose sum is σ = 46015821895680. Its totient is φ = 6484941619200.

The previous prime is 21220101111997. The next prime is 21220101112051. The reversal of 21220101112002 is 20021110102212.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8438574 + ... + 10660662.

It is an arithmetic number, because the mean of its divisors is an integer number (718997217120).

Almost surely, 2^{21220101112002} is an apocalyptic number.

21220101112002 is an abundant number, since it is smaller than the sum of its proper divisors (24795720783678).

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

21220101112002 is a wasteful number, since it uses less digits than its factorization.

21220101112002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2222939.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21220101112002 its reverse (20021110102212), we get a palindrome (41241211214214).

The spelling of 21220101112002 in words is "twenty-one trillion, two hundred twenty billion, one hundred one million, one hundred twelve thousand, two".