12220000212138 has 16 divisors (see below), whose sum is σ = 25726316236320. Its totient is φ = 3858947435376.

The previous prime is 12220000212109. The next prime is 12220000212139. The reversal of 12220000212138 is 83121200002221.

It is not an unprimeable number, because it can be changed into a prime (12220000212139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53596492045 + ... + 53596492272.

It is an arithmetic number, because the mean of its divisors is an integer number (1607894764770).

Almost surely, 2^{12220000212138} is an apocalyptic number.

12220000212138 is an abundant number, since it is smaller than the sum of its proper divisors (13506316024182).

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

12220000212138 is a wasteful number, since it uses less digits than its factorization.

12220000212138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107192984341.

The product of its (nonzero) digits is 768, while the sum is 24.

Adding to 12220000212138 its reverse (83121200002221), we get a palindrome (95341200214359).

The spelling of 12220000212138 in words is "twelve trillion, two hundred twenty billion, two hundred twelve thousand, one hundred thirty-eight".