101220030121 has 4 divisors (see below), whose sum is σ = 115680034432. Its totient is φ = 86760025812.

The previous prime is 101220030113. The next prime is 101220030139. The reversal of 101220030121 is 121030022101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 121030022101 = 1289 ⋅93894509.

It is a cyclic number.

It is not a de Polignac number, because 101220030121 - 2³ = 101220030113 is a prime.

It is a super-2 number, since 2×101220030121² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101220030151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7230002145 + ... + 7230002158.

It is an arithmetic number, because the mean of its divisors is an integer number (28920008608).

Almost surely, 2^101220030121 is an apocalyptic number.

It is an amenable number.

101220030121 is a deficient number, since it is larger than the sum of its proper divisors (14460004311).

101220030121 is an equidigital number, since it uses as much as digits as its factorization.

101220030121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14460004310.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 101220030121 its reverse (121030022101), we get a palindrome (222250052222).

The spelling of 101220030121 in words is "one hundred one billion, two hundred twenty million, thirty thousand, one hundred twenty-one".