1220112971 has 16 divisors (see below), whose sum is σ = 1535958528. Its totient is φ = 941500800.

The previous prime is 1220112961. The next prime is 1220112983. The reversal of 1220112971 is 1792110221.

It is a cyclic number.

It is not a de Polignac number, because 1220112971 - 2¹⁴ = 1220096587 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1220112971.

It is not an unprimeable number, because it can be changed into a prime (1220112941) 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, 68990 + ... + 84851.

It is an arithmetic number, because the mean of its divisors is an integer number (95997408).

Almost surely, 2^1220112971 is an apocalyptic number.

1220112971 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1220112971 is a deficient number, since it is larger than the sum of its proper divisors (315845557).

1220112971 is a wasteful number, since it uses less digits than its factorization.

1220112971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153962.

The product of its (nonzero) digits is 504, while the sum is 26.

The square root of 1220112971 is about 34930.1155308711. The cubic root of 1220112971 is about 1068.5627107900.

The spelling of 1220112971 in words is "one billion, two hundred twenty million, one hundred twelve thousand, nine hundred seventy-one".