1022122251 has 24 divisors (see below), whose sum is σ = 1527148896. Its totient is φ = 658316160.

The previous prime is 1022122247. The next prime is 1022122253. The reversal of 1022122251 is 1522212201.

It is not a de Polignac number, because 1022122251 - 2² = 1022122247 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1022122253) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24561 + ... + 51453.

It is an arithmetic number, because the mean of its divisors is an integer number (63631204).

Almost surely, 2^1022122251 is an apocalyptic number.

1022122251 is a deficient number, since it is larger than the sum of its proper divisors (505026645).

1022122251 is a wasteful number, since it uses less digits than its factorization.

1022122251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27043 (or 27040 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 1022122251 is about 31970.6467091299. The cubic root of 1022122251 is about 1007.3203651600.

Adding to 1022122251 its reverse (1522212201), we get a palindrome (2544334452).

The spelling of 1022122251 in words is "one billion, twenty-two million, one hundred twenty-two thousand, two hundred fifty-one".