1201220087 has 2 divisors, whose sum is σ = 1201220088. Its totient is φ = 1201220086.

The previous prime is 1201220063. The next prime is 1201220129. The reversal of 1201220087 is 7800221021.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1201220087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201220047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600610043 + 600610044.

It is an arithmetic number, because the mean of its divisors is an integer number (600610044).

Almost surely, 2^1201220087 is an apocalyptic number.

1201220087 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201220087 is an equidigital number, since it uses as much as digits as its factorization.

1201220087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 1201220087 is about 34658.6221162931. The cubic root of 1201220087 is about 1063.0185960551.

The spelling of 1201220087 in words is "one billion, two hundred one million, two hundred twenty thousand, eighty-seven".