202001211121 has 8 divisors (see below), whose sum is σ = 204032949120. Its totient is φ = 199970830272.

The previous prime is 202001211103. The next prime is 202001211157. The reversal of 202001211121 is 121112100202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 202001211121 - 2⁵ = 202001211089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202001211101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38776 + ... + 636793.

It is an arithmetic number, because the mean of its divisors is an integer number (25504118640).

Almost surely, 2^202001211121 is an apocalyptic number.

It is an amenable number.

202001211121 is a deficient number, since it is larger than the sum of its proper divisors (2031737999).

202001211121 is a wasteful number, since it uses less digits than its factorization.

202001211121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678575.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 202001211121 its reverse (121112100202), we get a palindrome (323113311323).

It can be divided in two parts, 20200 and 1211121, that added together give a palindrome (1231321).

The spelling of 202001211121 in words is "two hundred two billion, one million, two hundred eleven thousand, one hundred twenty-one".