121320302010 has 128 divisors (see below), whose sum is σ = 307030348800. Its totient is φ = 30635781120.

The previous prime is 121320302003. The next prime is 121320302021. The reversal of 121320302010 is 10203023121.

It is a super-2 number, since 2×121320302010² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 19473576 + ... + 19479804.

It is an arithmetic number, because the mean of its divisors is an integer number (2398674600).

Almost surely, 2^121320302010 is an apocalyptic number.

121320302010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 121320302010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153515174400).

121320302010 is an abundant number, since it is smaller than the sum of its proper divisors (185710046790).

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

121320302010 is a wasteful number, since it uses less digits than its factorization.

121320302010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6696.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 121320302010 its reverse (10203023121), we get a palindrome (131523325131).

The spelling of 121320302010 in words is "one hundred twenty-one billion, three hundred twenty million, three hundred two thousand, ten".