2123621377020 has 144 divisors (see below), whose sum is σ = 7567814453472. Its totient is φ = 475215966720.

The previous prime is 2123621376937. The next prime is 2123621377091. The reversal of 2123621377020 is 207731263212.

2123621377020 is a `hidden beast` number, since 2 + 1 + 2 + 3 + 621 + 3 + 7 + 7 + 0 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 41225647 + ... + 41277126.

It is an arithmetic number, because the mean of its divisors is an integer number (52554267038).

Almost surely, 2^{2123621377020} is an apocalyptic number.

2123621377020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2123621377020 is an abundant number, since it is smaller than the sum of its proper divisors (5444193076452).

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

2123621377020 is a wasteful number, since it uses less digits than its factorization.

2123621377020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82502812 (or 82502807 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The spelling of 2123621377020 in words is "two trillion, one hundred twenty-three billion, six hundred twenty-one million, three hundred seventy-seven thousand, twenty".