202123021030 has 32 divisors (see below), whose sum is σ = 419912735040. Its totient is φ = 68613187200.

The previous prime is 202123020971. The next prime is 202123021091. The reversal of 202123021030 is 30120321202.

It is a junction number, because it is equal to n+sod(n) for n = 202123020995 and 202123021013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14287345 + ... + 14301484.

It is an arithmetic number, because the mean of its divisors is an integer number (13122272970).

Almost surely, 2^202123021030 is an apocalyptic number.

202123021030 is an abundant number, since it is smaller than the sum of its proper divisors (217789714010).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

202123021030 is a wasteful number, since it uses less digits than its factorization.

202123021030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28588944.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 202123021030 its reverse (30120321202), we get a palindrome (232243342232).

The spelling of 202123021030 in words is "two hundred two billion, one hundred twenty-three million, twenty-one thousand, thirty".