21022111220102 has 8 divisors (see below), whose sum is σ = 31533186872136. Its totient is φ = 10511048929392.

The previous prime is 21022111220069. The next prime is 21022111220141. The reversal of 21022111220102 is 20102211122012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2999978 + ... + 7144514.

It is an arithmetic number, because the mean of its divisors is an integer number (3941648359017).

Almost surely, 2^{21022111220102} is an apocalyptic number.

21022111220102 is a deficient number, since it is larger than the sum of its proper divisors (10511075652034).

21022111220102 is a wasteful number, since it uses less digits than its factorization.

21022111220102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6680662.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21022111220102 its reverse (20102211122012), we get a palindrome (41124322342114).

It can be divided in two parts, 2102211122010 and 2, that added together give a palindrome (2102211122012).

The spelling of 21022111220102 in words is "twenty-one trillion, twenty-two billion, one hundred eleven million, two hundred twenty thousand, one hundred two".