202123120202 has 16 divisors (see below), whose sum is σ = 337914815040. Its totient is φ = 90110616768.

The previous prime is 202123120201. The next prime is 202123120207. The reversal of 202123120202 is 202021321202.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (202123120201) 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, 156441398 + ... + 156442689.

It is an arithmetic number, because the mean of its divisors is an integer number (21119675940).

Almost surely, 2^202123120202 is an apocalyptic number.

202123120202 is a deficient number, since it is larger than the sum of its proper divisors (135791694838).

202123120202 is a wasteful number, since it uses less digits than its factorization.

202123120202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312884125.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 202123120202 its reverse (202021321202), we get a palindrome (404144441404).

The spelling of 202123120202 in words is "two hundred two billion, one hundred twenty-three million, one hundred twenty thousand, two hundred two".