101002210121 has 4 divisors (see below), whose sum is σ = 101249159700. Its totient is φ = 100755260544.

The previous prime is 101002210037. The next prime is 101002210151. The reversal of 101002210121 is 121012200101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 50530094521 + 50472115600 = 224789^2 + 224660^2 .

It is a cyclic number.

It is not a de Polignac number, because 101002210121 - 2¹⁰ = 101002209097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101002210151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123474176 + ... + 123474993.

It is an arithmetic number, because the mean of its divisors is an integer number (25312289925).

Almost surely, 2^101002210121 is an apocalyptic number.

It is an amenable number.

101002210121 is a deficient number, since it is larger than the sum of its proper divisors (246949579).

101002210121 is an equidigital number, since it uses as much as digits as its factorization.

101002210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246949578.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 101002210121 its reverse (121012200101), we get a palindrome (222014410222).

The spelling of 101002210121 in words is "one hundred one billion, two million, two hundred ten thousand, one hundred twenty-one".