201121210220120 has 64 divisors (see below), whose sum is σ = 453540401820000. Its totient is φ = 80267571191808.

The previous prime is 201121210220113. The next prime is 201121210220131. The reversal of 201121210220120 is 21022012121102.

It is a congruent number.

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, 1111795199 + ... + 1111976081.

Almost surely, 2^{201121210220120} is an apocalyptic number.

201121210220120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201121210220120 is an abundant number, since it is smaller than the sum of its proper divisors (252419191599880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201121210220120 is a wasteful number, since it uses less digits than its factorization.

201121210220120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243252 (or 243248 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 201121210220120 its reverse (21022012121102), we get a palindrome (222143222341222).

The spelling of 201121210220120 in words is "two hundred one trillion, one hundred twenty-one billion, two hundred ten million, two hundred twenty thousand, one hundred twenty".