21133111212030 has 64 divisors (see below), whose sum is σ = 51213978915840. Its totient is φ = 5580555012096.

The previous prime is 21133111212013. The next prime is 21133111212047. The reversal of 21133111212030 is 3021211133112.

It is an interprime number because it is at equal distance from previous prime (21133111212013) and next prime (21133111212047).

It is a junction number, because it is equal to n+sod(n) for n = 21133111211988 and 21133111212006.

It is a congruent number.

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, 83745886 + ... + 83997854.

It is an arithmetic number, because the mean of its divisors is an integer number (800218420560).

Almost surely, 2^{21133111212030} is an apocalyptic number.

21133111212030 is an abundant number, since it is smaller than the sum of its proper divisors (30080867703810).

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

21133111212030 is a wasteful number, since it uses less digits than its factorization.

21133111212030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279225.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 21133111212030 its reverse (3021211133112), we get a palindrome (24154322345142).

The spelling of 21133111212030 in words is "twenty-one trillion, one hundred thirty-three billion, one hundred eleven million, two hundred twelve thousand, thirty".