2120011211178 has 144 divisors (see below), whose sum is σ = 5903588733120. Its totient is φ = 545300566272.

The previous prime is 2120011211177. The next prime is 2120011211207. The reversal of 2120011211178 is 8711121100212.

It is not an unprimeable number, because it can be changed into a prime (2120011211177) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2728848 + ... + 3418571.

It is an arithmetic number, because the mean of its divisors is an integer number (40997143980).

Almost surely, 2^{2120011211178} is an apocalyptic number.

2120011211178 is an abundant number, since it is smaller than the sum of its proper divisors (3783577521942).

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

2120011211178 is a wasteful number, since it uses less digits than its factorization.

2120011211178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6147481 (or 6147471 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 27.

The spelling of 2120011211178 in words is "two trillion, one hundred twenty billion, eleven million, two hundred eleven thousand, one hundred seventy-eight".