2621222651 has 2 divisors, whose sum is σ = 2621222652. Its totient is φ = 2621222650.

The previous prime is 2621222641. The next prime is 2621222657. The reversal of 2621222651 is 1562221262.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2621222651 - 2²² = 2617028347 is a prime.

It is a super-2 number, since 2×2621222651² = 13741616372230935602, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2621222657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1310611325 + 1310611326.

It is an arithmetic number, because the mean of its divisors is an integer number (1310611326).

Almost surely, 2^2621222651 is an apocalyptic number.

2621222651 is a deficient number, since it is larger than the sum of its proper divisors (1).

2621222651 is an equidigital number, since it uses as much as digits as its factorization.

2621222651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5760, while the sum is 29.

The square root of 2621222651 is about 51197.8774071738. The cubic root of 2621222651 is about 1378.8000931269.

The spelling of 2621222651 in words is "two billion, six hundred twenty-one million, two hundred twenty-two thousand, six hundred fifty-one".