121021010 has 32 divisors (see below), whose sum is σ = 238099392. Its totient is φ = 43922880.

The previous prime is 121021007. The next prime is 121021037. The reversal of 121021010 is 10120121.

It is a super-2 number, since 2×121021010² = 29292169722840200, which contains 22 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 99164 + ... + 100376.

It is an arithmetic number, because the mean of its divisors is an integer number (7440606).

Almost surely, 2^121021010 is an apocalyptic number.

121021010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121021010 is a deficient number, since it is larger than the sum of its proper divisors (117078382).

121021010 is a wasteful number, since it uses less digits than its factorization.

121021010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2138.

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 121021010 is about 11000.9549585479. The cubic root of 121021010 is about 494.6373700227.

Adding to 121021010 its reverse (10120121), we get a palindrome (131141131).

The spelling of 121021010 in words is "one hundred twenty-one million, twenty-one thousand, ten".