20121121020010 has 32 divisors (see below), whose sum is σ = 36304383692160. Its totient is φ = 8029275968448.

The previous prime is 20121121019999. The next prime is 20121121020053. The reversal of 20121121020010 is 1002012112102.

It is a super-2 number, since 2×20121121020010² (a number of 27 digits) contains 22 as substring.

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, 6818224 + ... + 9312916.

It is an arithmetic number, because the mean of its divisors is an integer number (1134511990380).

Almost surely, 2^{20121121020010} is an apocalyptic number.

20121121020010 is a deficient number, since it is larger than the sum of its proper divisors (16183262672150).

20121121020010 is a wasteful number, since it uses less digits than its factorization.

20121121020010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2496622.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20121121020010 its reverse (1002012112102), we get a palindrome (21123133132112).

The spelling of 20121121020010 in words is "twenty trillion, one hundred twenty-one billion, one hundred twenty-one million, twenty thousand, ten".