1055051221901 has 32 divisors (see below), whose sum is σ = 1128862656000. Its totient is φ = 983230230528.

The previous prime is 1055051221897. The next prime is 1055051221919. The reversal of 1055051221901 is 1091221505501.

It is a cyclic number.

It is not a de Polignac number, because 1055051221901 - 2² = 1055051221897 is a prime.

It is a super-2 number, since 2×1055051221901² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1055051221201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 160607345 + ... + 160613913.

It is an arithmetic number, because the mean of its divisors is an integer number (35276958000).

Almost surely, 2^{1055051221901} is an apocalyptic number.

It is an amenable number.

1055051221901 is a deficient number, since it is larger than the sum of its proper divisors (73811434099).

1055051221901 is a wasteful number, since it uses less digits than its factorization.

1055051221901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7253.

The product of its (nonzero) digits is 4500, while the sum is 32.

The spelling of 1055051221901 in words is "one trillion, fifty-five billion, fifty-one million, two hundred twenty-one thousand, nine hundred one".