21011010122102 has 32 divisors (see below), whose sum is σ = 42315880529664. Its totient is φ = 7556407236000.

The previous prime is 21011010122099. The next prime is 21011010122119. The reversal of 21011010122102 is 20122101011012.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

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, 5247503024 + ... + 5247507027.

It is an arithmetic number, because the mean of its divisors is an integer number (1322371266552).

Almost surely, 2^{21011010122102} is an apocalyptic number.

21011010122102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21011010122102 is an abundant number, since it is smaller than the sum of its proper divisors (21304870407562).

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

21011010122102 is a wasteful number, since it uses less digits than its factorization.

21011010122102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10495010084.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21011010122102 its reverse (20122101011012), we get a palindrome (41133111133114).

It can be divided in two parts, 21011010 and 122102, that added together give a palindrome (21133112).

The spelling of 21011010122102 in words is "twenty-one trillion, eleven billion, ten million, one hundred twenty-two thousand, one hundred two".