21220010110002 has 64 divisors (see below), whose sum is σ = 46992136149504. Its totient is φ = 6333938519040.

The previous prime is 21220010109997. The next prime is 21220010110027. The reversal of 21220010110002 is 20001101002212.

It is a self number, because there is not a number n which added to its sum of digits gives 21220010110002.

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, 75506898 + ... + 75787410.

It is an arithmetic number, because the mean of its divisors is an integer number (734252127336).

Almost surely, 2^{21220010110002} is an apocalyptic number.

21220010110002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21220010110002 is an abundant number, since it is smaller than the sum of its proper divisors (25772126039502).

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

21220010110002 is a wasteful number, since it uses less digits than its factorization.

21220010110002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297703.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 21220010110002 its reverse (20001101002212), we get a palindrome (41221111112214).

The spelling of 21220010110002 in words is "twenty-one trillion, two hundred twenty billion, ten million, one hundred ten thousand, two".