2111220212136 has 32 divisors (see below), whose sum is σ = 6032057749440. Its totient is φ = 603205774848.

The previous prime is 2111220212099. The next prime is 2111220212137. The reversal of 2111220212136 is 6312120221112.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (2111220212137) 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, 6283393321 + ... + 6283393656.

It is an arithmetic number, because the mean of its divisors is an integer number (188501804670).

Almost surely, 2^{2111220212136} is an apocalyptic number.

It is an amenable number.

2111220212136 is an abundant number, since it is smaller than the sum of its proper divisors (3920837537304).

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

2111220212136 is a wasteful number, since it uses less digits than its factorization.

2111220212136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12566786993 (or 12566786989 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

Adding to 2111220212136 its reverse (6312120221112), we get a palindrome (8423340433248).

The spelling of 2111220212136 in words is "two trillion, one hundred eleven billion, two hundred twenty million, two hundred twelve thousand, one hundred thirty-six".