1012622261 has 16 divisors (see below), whose sum is σ = 1202611200. Its totient is φ = 834236928.

The previous prime is 1012622231. The next prime is 1012622269. The reversal of 1012622261 is 1622262101.

It is a happy number.

It is not a de Polignac number, because 1012622261 - 2¹⁰ = 1012621237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012622269) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34085 + ... + 56453.

It is an arithmetic number, because the mean of its divisors is an integer number (75163200).

Almost surely, 2^1012622261 is an apocalyptic number.

It is an amenable number.

1012622261 is a deficient number, since it is larger than the sum of its proper divisors (189988939).

1012622261 is a wasteful number, since it uses less digits than its factorization.

1012622261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22628.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 1012622261 is about 31821.7262416733. The cubic root of 1012622261 is about 1004.1898410481.

Adding to 1012622261 its reverse (1622262101), we get a palindrome (2634884362).

The spelling of 1012622261 in words is "one billion, twelve million, six hundred twenty-two thousand, two hundred sixty-one".