211021021220022 has 24 divisors (see below), whose sum is σ = 492382382847264. Its totient is φ = 64929544990704.

The previous prime is 211021021220003. The next prime is 211021021220089. The reversal of 211021021220022 is 220022120120112.

It is a happy number.

211021021220022 is a `hidden beast` number, since 21 + 1 + 0 + 210 + 212 + 200 + 22 = 666.

211021021220022 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 211021021219977 and 211021021220004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 450899617758 + ... + 450899618225.

It is an arithmetic number, because the mean of its divisors is an integer number (20515932618636).

Almost surely, 2^{211021021220022} is an apocalyptic number.

211021021220022 is an abundant number, since it is smaller than the sum of its proper divisors (281361361627242).

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

211021021220022 is a wasteful number, since it uses less digits than its factorization.

211021021220022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901799236004 (or 901799236001 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 211021021220022 its reverse (220022120120112), we get a palindrome (431043141340134).

The spelling of 211021021220022 in words is "two hundred eleven trillion, twenty-one billion, twenty-one million, two hundred twenty thousand, twenty-two".