2120105551042 has 32 divisors (see below), whose sum is σ = 3226002945984. Its totient is φ = 1044833832000.

The previous prime is 2120105551021. The next prime is 2120105551111. The reversal of 2120105551042 is 2401555010212.

It is a self number, because there is not a number n which added to its sum of digits gives 2120105551042.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137420533 + ... + 137435959.

It is an arithmetic number, because the mean of its divisors is an integer number (100812592062).

Almost surely, 2^{2120105551042} is an apocalyptic number.

2120105551042 is a deficient number, since it is larger than the sum of its proper divisors (1105897394942).

2120105551042 is a wasteful number, since it uses less digits than its factorization.

2120105551042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17394.

The product of its (nonzero) digits is 4000, while the sum is 28.

The spelling of 2120105551042 in words is "two trillion, one hundred twenty billion, one hundred five million, five hundred fifty-one thousand, forty-two".