1220132987 has 2 divisors, whose sum is σ = 1220132988. Its totient is φ = 1220132986.

The previous prime is 1220132983. The next prime is 1220133017. The reversal of 1220132987 is 7892310221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1220132987 - 2² = 1220132983 is a prime.

It is not a weakly prime, because it can be changed into another prime (1220132983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610066493 + 610066494.

It is an arithmetic number, because the mean of its divisors is an integer number (610066494).

Almost surely, 2^1220132987 is an apocalyptic number.

1220132987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220132987 is an equidigital number, since it uses as much as digits as its factorization.

1220132987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 1220132987 is about 34930.4020446373. The cubic root of 1220132987 is about 1068.5685540287.

It can be divided in two parts, 122013 and 2987, that added together give a cube (125000 = 50³).

The spelling of 1220132987 in words is "one billion, two hundred twenty million, one hundred thirty-two thousand, nine hundred eighty-seven".