202012343121 has 8 divisors (see below), whose sum is σ = 273915041760. Its totient is φ = 132392269952.

The previous prime is 202012343101. The next prime is 202012343173. The reversal of 202012343121 is 121343210202.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202012343121 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (202012343101) 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, 570656160 + ... + 570656513.

It is an arithmetic number, because the mean of its divisors is an integer number (34239380220).

Almost surely, 2^202012343121 is an apocalyptic number.

It is an amenable number.

202012343121 is a deficient number, since it is larger than the sum of its proper divisors (71902698639).

202012343121 is a wasteful number, since it uses less digits than its factorization.

202012343121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1141312735.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 202012343121 its reverse (121343210202), we get a palindrome (323355553323).

The spelling of 202012343121 in words is "two hundred two billion, twelve million, three hundred forty-three thousand, one hundred twenty-one".