210020222111021 has 32 divisors (see below), whose sum is σ = 265412588087808. Its totient is φ = 161926698700800.

The previous prime is 210020222111003. The next prime is 210020222111041. The reversal of 210020222111021 is 120111222020012.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210020222111021 is a prime.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210020222111041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28658630 + ... + 35232903.

It is an arithmetic number, because the mean of its divisors is an integer number (8294143377744).

Almost surely, 2^{210020222111021} is an apocalyptic number.

It is an amenable number.

210020222111021 is a deficient number, since it is larger than the sum of its proper divisors (55392365976787).

210020222111021 is a wasteful number, since it uses less digits than its factorization.

210020222111021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63892781.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 210020222111021 its reverse (120111222020012), we get a palindrome (330131444131033).

The spelling of 210020222111021 in words is "two hundred ten trillion, twenty billion, two hundred twenty-two million, one hundred eleven thousand, twenty-one".