1211560470720 has 84 divisors (see below), whose sum is σ = 4167263212320. Its totient is φ = 323082791424.

The previous prime is 1211560470691. The next prime is 1211560470749. The reversal of 1211560470720 is 270740651121.

1211560470720 is a `hidden beast` number, since 1 + 2 + 1 + 1 + 560 + 4 + 70 + 7 + 20 = 666.

It is an interprime number because it is at equal distance from previous prime (1211560470691) and next prime (1211560470749).

It is a super-2 number, since 2×1211560470720² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 210337480 + ... + 210343239.

Almost surely, 2^{1211560470720} is an apocalyptic number.

1211560470720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1211560470720 is an abundant number, since it is smaller than the sum of its proper divisors (2955702741600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1211560470720 is a wasteful number, since it uses less digits than its factorization.

1211560470720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420680742 (or 420680729 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The spelling of 1211560470720 in words is "one trillion, two hundred eleven billion, five hundred sixty million, four hundred seventy thousand, seven hundred twenty".