1055214021 has 16 divisors (see below), whose sum is σ = 1511953344. Its totient is φ = 652210944.

The previous prime is 1055213969. The next prime is 1055214029. The reversal of 1055214021 is 1204125501.

It is not a de Polignac number, because 1055214021 - 2²⁹ = 518343109 is a prime.

It is a super-2 number, since 2×1055214021² = 2226953260229976882, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1055214029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150990 + ... + 157823.

It is an arithmetic number, because the mean of its divisors is an integer number (94497084).

Almost surely, 2^1055214021 is an apocalyptic number.

It is an amenable number.

1055214021 is a deficient number, since it is larger than the sum of its proper divisors (456739323).

1055214021 is a wasteful number, since it uses less digits than its factorization.

1055214021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308900.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 1055214021 is about 32484.0579515553. The cubic root of 1055214021 is about 1018.0759644590.

Adding to 1055214021 its reverse (1204125501), we get a palindrome (2259339522).

The spelling of 1055214021 in words is "one billion, fifty-five million, two hundred fourteen thousand, twenty-one".