211022020120021 has 32 divisors (see below), whose sum is σ = 242106430913280. Its totient is φ = 182154320409600.

The previous prime is 211022020119917. The next prime is 211022020120049. The reversal of 211022020120021 is 120021020220112.

It is a happy number.

It is not a de Polignac number, because 211022020120021 - 2¹³ = 211022020111829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211022020119977 and 211022020120004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211022020120721) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2742676 + ... + 20725981.

It is an arithmetic number, because the mean of its divisors is an integer number (7565825966040).

Almost surely, 2^{211022020120021} is an apocalyptic number.

It is an amenable number.

211022020120021 is a deficient number, since it is larger than the sum of its proper divisors (31084410793259).

211022020120021 is a wasteful number, since it uses less digits than its factorization.

211022020120021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23469165.

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

Adding to 211022020120021 its reverse (120021020220112), we get a palindrome (331043040340133).

The spelling of 211022020120021 in words is "two hundred eleven trillion, twenty-two billion, twenty million, one hundred twenty thousand, twenty-one".