210202122222121 has 16 divisors (see below), whose sum is σ = 211078492466688. Its totient is φ = 209327380416000.

The previous prime is 210202122222097. The next prime is 210202122222137. The reversal of 210202122222121 is 121222221202012.

It is a cyclic number.

It is not a de Polignac number, because 210202122222121 - 2¹³ = 210202122213929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210202122222092 and 210202122222101.

It is not an unprimeable number, because it can be changed into a prime (210202122282121) 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, 5410449346 + ... + 5410488196.

It is an arithmetic number, because the mean of its divisors is an integer number (13192405779168).

Almost surely, 2^{210202122222121} is an apocalyptic number.

It is an amenable number.

210202122222121 is a deficient number, since it is larger than the sum of its proper divisors (876370244567).

210202122222121 is a wasteful number, since it uses less digits than its factorization.

210202122222121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59232.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 210202122222121 its reverse (121222221202012), we get a palindrome (331424343424133).

The spelling of 210202122222121 in words is "two hundred ten trillion, two hundred two billion, one hundred twenty-two million, two hundred twenty-two thousand, one hundred twenty-one".