20211020020210 has 32 divisors (see below), whose sum is σ = 38274369385392. Its totient is φ = 7674059013120.

The previous prime is 20211020020129. The next prime is 20211020020237. The reversal of 20211020020210 is 1202002011202.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 12609480266289 + 7601539753921 = 3550983^2 + 2757089^2 .

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, 666135787 + ... + 666166126.

Almost surely, 2^{20211020020210} is an apocalyptic number.

20211020020210 is a deficient number, since it is larger than the sum of its proper divisors (18063349365182).

20211020020210 is a wasteful number, since it uses less digits than its factorization.

20211020020210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1332301998.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20211020020210 its reverse (1202002011202), we get a palindrome (21413022031412).

The spelling of 20211020020210 in words is "twenty trillion, two hundred eleven billion, twenty million, twenty thousand, two hundred ten".