121021210010 has 32 divisors (see below), whose sum is σ = 218448264960. Its totient is φ = 48273104448.

The previous prime is 121021209943. The next prime is 121021210073. The reversal of 121021210010 is 10012120121.

It is a super-2 number, since 2×121021210010² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121021209973 and 121021210000.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5258789 + ... + 5281751.

It is an arithmetic number, because the mean of its divisors is an integer number (6826508280).

Almost surely, 2^121021210010 is an apocalyptic number.

121021210010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121021210010 is a deficient number, since it is larger than the sum of its proper divisors (97427054950).

121021210010 is a wasteful number, since it uses less digits than its factorization.

121021210010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24422.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 121021210010 its reverse (10012120121), we get a palindrome (131033330131).

The spelling of 121021210010 in words is "one hundred twenty-one billion, twenty-one million, two hundred ten thousand, ten".