212022100122021 has 24 divisors (see below), whose sum is σ = 368426038643520. Its totient is φ = 114778881268416.

The previous prime is 212022100122017. The next prime is 212022100122023. The reversal of 212022100122021 is 120221001220212.

It is a happy number.

212022100122021 is a `hidden beast` number, since 212 + 0 + 2 + 210 + 0 + 1 + 220 + 21 = 666.

It is not a de Polignac number, because 212022100122021 - 2² = 212022100122017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212022100121985 and 212022100122003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212022100122023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 88563950400 + ... + 88563952793.

It is an arithmetic number, because the mean of its divisors is an integer number (15351084943480).

Almost surely, 2^{212022100122021} is an apocalyptic number.

212022100122021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

212022100122021 is a deficient number, since it is larger than the sum of its proper divisors (156403938521499).

212022100122021 is a wasteful number, since it uses less digits than its factorization.

212022100122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177127903225 (or 177127903222 counting only the distinct ones).

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

Adding to 212022100122021 its reverse (120221001220212), we get a palindrome (332243101342233).

It can be divided in two parts, 2 and 12022100122021, that multiplied together give a palindrome (24044200244042).

The spelling of 212022100122021 in words is "two hundred twelve trillion, twenty-two billion, one hundred million, one hundred twenty-two thousand, twenty-one".