21100102011222 has 32 divisors (see below), whose sum is σ = 45623207744352. Its totient is φ = 6467077054464.

The previous prime is 21100102011221. The next prime is 21100102011251. The reversal of 21100102011222 is 22211020100112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21100102011221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 526272033 + ... + 526312124.

It is an arithmetic number, because the mean of its divisors is an integer number (1425725242011).

Almost surely, 2^{21100102011222} is an apocalyptic number.

21100102011222 is an abundant number, since it is smaller than the sum of its proper divisors (24523105733130).

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

21100102011222 is a wasteful number, since it uses less digits than its factorization.

21100102011222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1052584432.

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

Adding to 21100102011222 its reverse (22211020100112), we get a palindrome (43311122111334).

The spelling of 21100102011222 in words is "twenty-one trillion, one hundred billion, one hundred two million, eleven thousand, two hundred twenty-two".