212022220022021 has 8 divisors (see below), whose sum is σ = 227335812981120. Its totient is φ = 197024371247808.

The previous prime is 212022220022017. The next prime is 212022220022069. The reversal of 212022220022021 is 120220022220212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212022220022021 - 2² = 212022220022017 is a prime.

It is a super-2 number, since 2×212022220022021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212022220021984 and 212022220022002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212022220022621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78936044831 + ... + 78936047516.

It is an arithmetic number, because the mean of its divisors is an integer number (28416976622640).

Almost surely, 2^{212022220022021} is an apocalyptic number.

It is an amenable number.

212022220022021 is a deficient number, since it is larger than the sum of its proper divisors (15313592959099).

212022220022021 is a wasteful number, since it uses less digits than its factorization.

212022220022021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157872092443.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 212022220022021 its reverse (120220022220212), we get a palindrome (332242242242233).

The spelling of 212022220022021 in words is "two hundred twelve trillion, twenty-two billion, two hundred twenty million, twenty-two thousand, twenty-one".