212210222211021 has 8 divisors (see below), whose sum is σ = 283762372064544. Its totient is φ = 141065776915760.

The previous prime is 212210222210977. The next prime is 212210222211047. The reversal of 212210222211021 is 120112222012212.

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 212210222211021 - 2²¹ = 212210220113869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212210222211521) 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, 101926138350 + ... + 101926140431.

It is an arithmetic number, because the mean of its divisors is an integer number (35470296508068).

Almost surely, 2^{212210222211021} is an apocalyptic number.

It is an amenable number.

212210222211021 is a deficient number, since it is larger than the sum of its proper divisors (71552149853523).

212210222211021 is a wasteful number, since it uses less digits than its factorization.

212210222211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203852279131.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 212210222211021 its reverse (120112222012212), we get a palindrome (332322444223233).

The spelling of 212210222211021 in words is "two hundred twelve trillion, two hundred ten billion, two hundred twenty-two million, two hundred eleven thousand, twenty-one".