1051221626 has 32 divisors (see below), whose sum is σ = 2042866560. Its totient is φ = 393978816.

The previous prime is 1051221593. The next prime is 1051221653. The reversal of 1051221626 is 6261221501.

It is a super-2 number, since 2×1051221626² = 2210133813940167752, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a junction number, because it is equal to n+sod(n) for n = 1051221595 and 1051221604.

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, 148541 + ... + 155456.

It is an arithmetic number, because the mean of its divisors is an integer number (63839580).

Almost surely, 2^1051221626 is an apocalyptic number.

1051221626 is a deficient number, since it is larger than the sum of its proper divisors (991644934).

1051221626 is a wasteful number, since it uses less digits than its factorization.

1051221626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304038.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 1051221626 is about 32422.5481108441. The cubic root of 1051221626 is about 1016.7903806213.

The spelling of 1051221626 in words is "one billion, fifty-one million, two hundred twenty-one thousand, six hundred twenty-six".