210122221022021 has 16 divisors (see below), whose sum is σ = 264564329217408. Its totient is φ = 162110495832000.

The previous prime is 210122221021931. The next prime is 210122221022071. The reversal of 210122221022021 is 120220122221012.

It is a cyclic number.

It is not a de Polignac number, because 210122221022021 - 2²² = 210122216827717 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210122221021984 and 210122221022002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210122221022071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13509200210 + ... + 13509215763.

It is an arithmetic number, because the mean of its divisors is an integer number (16535270576088).

Almost surely, 2^{210122221022021} is an apocalyptic number.

It is an amenable number.

210122221022021 is a deficient number, since it is larger than the sum of its proper divisors (54442108195387).

210122221022021 is a wasteful number, since it uses less digits than its factorization.

210122221022021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27018416092.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 210122221022021 its reverse (120220122221012), we get a palindrome (330342343243033).

The spelling of 210122221022021 in words is "two hundred ten trillion, one hundred twenty-two billion, two hundred twenty-one million, twenty-two thousand, twenty-one".