202121020110022 has 16 divisors (see below), whose sum is σ = 329392595064960. Its totient is φ = 92461079313792.

The previous prime is 202121020110019. The next prime is 202121020110071. The reversal of 202121020110022 is 220011020121202.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 202121020109978 and 202121020110005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34397720022 + ... + 34397725897.

It is an arithmetic number, because the mean of its divisors is an integer number (20587037191560).

Almost surely, 2^{202121020110022} is an apocalyptic number.

202121020110022 is a deficient number, since it is larger than the sum of its proper divisors (127271574954938).

202121020110022 is a wasteful number, since it uses less digits than its factorization.

202121020110022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68795446047.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 202121020110022 its reverse (220011020121202), we get a palindrome (422132040231224).

The spelling of 202121020110022 in words is "two hundred two trillion, one hundred twenty-one billion, twenty million, one hundred ten thousand, twenty-two".