20111121101210 has 64 divisors (see below), whose sum is σ = 37533522023424. Its totient is φ = 7752901363200.

The previous prime is 20111121101179. The next prime is 20111121101233. The reversal of 20111121101210 is 1210112111102.

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, 425725712 + ... + 425772948.

It is an arithmetic number, because the mean of its divisors is an integer number (586461281616).

Almost surely, 2^{20111121101210} is an apocalyptic number.

20111121101210 is a deficient number, since it is larger than the sum of its proper divisors (17422400922214).

20111121101210 is a wasteful number, since it uses less digits than its factorization.

20111121101210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59879.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 20111121101210 its reverse (1210112111102), we get a palindrome (21321233212312).

The spelling of 20111121101210 in words is "twenty trillion, one hundred eleven billion, one hundred twenty-one million, one hundred one thousand, two hundred ten".