201120210021121 has 16 divisors (see below), whose sum is σ = 202408785633600. Its totient is φ = 199835050060800.

The previous prime is 201120210021113. The next prime is 201120210021209. The reversal of 201120210021121 is 121120012021102.

It is a cyclic number.

It is not a de Polignac number, because 201120210021121 - 2³ = 201120210021113 is a prime.

It is a super-2 number, since 2×201120210021121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201120210021095 and 201120210021104.

It is not an unprimeable number, because it can be changed into a prime (201120210028121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 337050610 + ... + 337646788.

It is an arithmetic number, because the mean of its divisors is an integer number (12650549102100).

Almost surely, 2^{201120210021121} is an apocalyptic number.

It is an amenable number.

201120210021121 is a deficient number, since it is larger than the sum of its proper divisors (1288575612479).

201120210021121 is a wasteful number, since it uses less digits than its factorization.

201120210021121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599040.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 201120210021121 its reverse (121120012021102), we get a palindrome (322240222042223).

The spelling of 201120210021121 in words is "two hundred one trillion, one hundred twenty billion, two hundred ten million, twenty-one thousand, one hundred twenty-one".