3122121000 has 128 divisors (see below), whose sum is σ = 9765100800. Its totient is φ = 830508800.

The previous prime is 3122120977. The next prime is 3122121061. The reversal of 3122121000 is 1212213.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1507966 + ... + 1510034.

It is an arithmetic number, because the mean of its divisors is an integer number (76289850).

Almost surely, 2^3122121000 is an apocalyptic number.

3122121000 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3122121000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4882550400).

3122121000 is an abundant number, since it is smaller than the sum of its proper divisors (6642979800).

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

3122121000 is a wasteful number, since it uses less digits than its factorization.

3122121000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2596 (or 2582 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 3122121000 is about 55875.9429450636. The cubic root of 3122121000 is about 1461.5597579822.

Adding to 3122121000 its reverse (1212213), we get a palindrome (3123333213).

The spelling of 3122121000 in words is "three billion, one hundred twenty-two million, one hundred twenty-one thousand".