1220900903 has 2 divisors, whose sum is σ = 1220900904. Its totient is φ = 1220900902.

The previous prime is 1220900861. The next prime is 1220900953. The reversal of 1220900903 is 3090090221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1220900903 - 2⁸ = 1220900647 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220900953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610450451 + 610450452.

It is an arithmetic number, because the mean of its divisors is an integer number (610450452).

Almost surely, 2^1220900903 is an apocalyptic number.

1220900903 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220900903 is an equidigital number, since it uses as much as digits as its factorization.

1220900903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 1220900903 is about 34941.3924021353. The cubic root of 1220900903 is about 1068.7926822756.

The spelling of 1220900903 in words is "one billion, two hundred twenty million, nine hundred thousand, nine hundred three".