103121022121 has 16 divisors (see below), whose sum is σ = 114768838800. Its totient is φ = 92045076480.

The previous prime is 103121022101. The next prime is 103121022127. The reversal of 103121022121 is 121220121301.

It can be written as a sum of positive squares in 8 ways, for example, as 79814725225 + 23306296896 = 282515^2 + 152664^2 .

It is a cyclic number.

It is not a de Polignac number, because 103121022121 - 2⁵ = 103121022089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103121022095 and 103121022104.

It is not an unprimeable number, because it can be changed into a prime (103121022127) 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, 795846 + ... + 916303.

It is an arithmetic number, because the mean of its divisors is an integer number (7173052425).

Almost surely, 2^103121022121 is an apocalyptic number.

It is an amenable number.

103121022121 is a deficient number, since it is larger than the sum of its proper divisors (11647816679).

103121022121 is a wasteful number, since it uses less digits than its factorization.

103121022121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1712316.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 103121022121 its reverse (121220121301), we get a palindrome (224341143422).

The spelling of 103121022121 in words is "one hundred three billion, one hundred twenty-one million, twenty-two thousand, one hundred twenty-one".