202102220201121 has 12 divisors (see below), whose sum is σ = 297433456145748. Its totient is φ = 132192647175264.

The previous prime is 202102220201117. The next prime is 202102220201153. The reversal of 202102220201121 is 121102022201202.

It is a happy number.

202102220201121 is a `hidden beast` number, since 20 + 2 + 102 + 220 + 201 + 121 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 155572236579600 + 46529983621521 = 12472860^2 + 6821289^2 .

It is not a de Polignac number, because 202102220201121 - 2² = 202102220201117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202102220201094 and 202102220201103.

It is not an unprimeable number, because it can be changed into a prime (202102220201191) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 211847190510 + ... + 211847191463.

It is an arithmetic number, because the mean of its divisors is an integer number (24786121345479).

Almost surely, 2^{202102220201121} is an apocalyptic number.

It is an amenable number.

202102220201121 is a deficient number, since it is larger than the sum of its proper divisors (95331235944627).

202102220201121 is a wasteful number, since it uses less digits than its factorization.

202102220201121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423694382032 (or 423694382029 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 202102220201121 its reverse (121102022201202), we get a palindrome (323204242402323).

The spelling of 202102220201121 in words is "two hundred two trillion, one hundred two billion, two hundred twenty million, two hundred one thousand, one hundred twenty-one".