1210121064 has 48 divisors (see below), whose sum is σ = 3470203620. Its totient is φ = 379645440.

The previous prime is 1210121063. The next prime is 1210121113. The reversal of 1210121064 is 4601210121.

It can be written as a sum of positive squares in 2 ways, for example, as 916272900 + 293848164 = 30270^2 + 17142^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1210121063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 493107 + ... + 495554.

Almost surely, 2^1210121064 is an apocalyptic number.

It is an amenable number.

1210121064 is an abundant number, since it is smaller than the sum of its proper divisors (2260082556).

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

1210121064 is a wasteful number, since it uses less digits than its factorization.

1210121064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 988690 (or 988683 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 1210121064 is about 34786.7943909754. The cubic root of 1210121064 is about 1065.6377744435.

Adding to 1210121064 its reverse (4601210121), we get a palindrome (5811331185).

The spelling of 1210121064 in words is "one billion, two hundred ten million, one hundred twenty-one thousand, sixty-four".