20210506202 has 16 divisors (see below), whose sum is σ = 32102023680. Its totient is φ = 9509942208.

The previous prime is 20210506201. The next prime is 20210506231. The reversal of 20210506202 is 20260501202.

It is not an unprimeable number, because it can be changed into a prime (20210506201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 476999 + ... + 517637.

It is an arithmetic number, because the mean of its divisors is an integer number (2006376480).

Almost surely, 2^20210506202 is an apocalyptic number.

20210506202 is a deficient number, since it is larger than the sum of its proper divisors (11891517478).

20210506202 is a wasteful number, since it uses less digits than its factorization.

20210506202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55285.

The product of its (nonzero) digits is 480, while the sum is 20.

Subtracting 20210506202 from its reverse (20260501202), we obtain a triangular number (49995000 = T₉₉₉₉).

The spelling of 20210506202 in words is "twenty billion, two hundred ten million, five hundred six thousand, two hundred two".