1210121983 has 12 divisors (see below), whose sum is σ = 1453104192. Its totient is φ = 1003786560.

The previous prime is 1210121933. The next prime is 1210121993. The reversal of 1210121983 is 3891210121.

It is not a de Polignac number, because 1210121983 - 2¹⁷ = 1209990911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210121933) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 396810 + ... + 399847.

It is an arithmetic number, because the mean of its divisors is an integer number (121092016).

Almost surely, 2^1210121983 is an apocalyptic number.

1210121983 is a deficient number, since it is larger than the sum of its proper divisors (242982209).

1210121983 is an equidigital number, since it uses as much as digits as its factorization.

1210121983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796702 (or 796695 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 1210121983 is about 34786.8076000084. The cubic root of 1210121983 is about 1065.6380442018.

The spelling of 1210121983 in words is "one billion, two hundred ten million, one hundred twenty-one thousand, nine hundred eighty-three".