210122210121 has 8 divisors (see below), whose sum is σ = 280209378624. Its totient is φ = 140058257520.

The previous prime is 210122210107. The next prime is 210122210149. The reversal of 210122210121 is 121012221012.

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

It is not a de Polignac number, because 210122210121 - 2²² = 210118015817 is a prime.

It is a super-2 number, since 2×210122210121² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 210122210121.

It is not an unprimeable number, because it can be changed into a prime (210122210521) 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, 5782845 + ... + 5819066.

It is an arithmetic number, because the mean of its divisors is an integer number (35026172328).

Almost surely, 2^210122210121 is an apocalyptic number.

It is an amenable number.

210122210121 is a deficient number, since it is larger than the sum of its proper divisors (70087168503).

210122210121 is a wasteful number, since it uses less digits than its factorization.

210122210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11607951.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 210122210121 its reverse (121012221012), we get a palindrome (331134431133).

The spelling of 210122210121 in words is "two hundred ten billion, one hundred twenty-two million, two hundred ten thousand, one hundred twenty-one".