1220440010 has 16 divisors (see below), whose sum is σ = 2238241896. Its totient is φ = 478964928.

The previous prime is 1220440009. The next prime is 1220440021. The reversal of 1220440010 is 100440221.

It can be written as a sum of positive squares in 4 ways, for example, as 992943121 + 227496889 = 31511^2 + 15083^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1150829 + ... + 1151888.

Almost surely, 2^1220440010 is an apocalyptic number.

1220440010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220440010 is a deficient number, since it is larger than the sum of its proper divisors (1017801886).

1220440010 is a wasteful number, since it uses less digits than its factorization.

1220440010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2302777.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 1220440010 is about 34934.7965501447. The cubic root of 1220440010 is about 1068.6581747538.

Adding to 1220440010 its reverse (100440221), we get a palindrome (1320880231).

The spelling of 1220440010 in words is "one billion, two hundred twenty million, four hundred forty thousand, ten".