20201121111212 has 24 divisors (see below), whose sum is σ = 37450270848816. Its totient is φ = 9501639971328.

The previous prime is 20201121111209. The next prime is 20201121111251. The reversal of 20201121111212 is 21211112110202.

20201121111212 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74394158 + ... + 74665205.

It is an arithmetic number, because the mean of its divisors is an integer number (1560427952034).

Almost surely, 2^{20201121111212} is an apocalyptic number.

It is an amenable number.

20201121111212 is a deficient number, since it is larger than the sum of its proper divisors (17249149737604).

20201121111212 is a wasteful number, since it uses less digits than its factorization.

20201121111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149061377 (or 149061375 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 20201121111212 its reverse (21211112110202), we get a palindrome (41412233221414).

The spelling of 20201121111212 in words is "twenty trillion, two hundred one billion, one hundred twenty-one million, one hundred eleven thousand, two hundred twelve".