121121020123131 has 8 divisors (see below), whose sum is σ = 184565363997184. Its totient is φ = 69212011498920.

The previous prime is 121121020123097. The next prime is 121121020123151. The reversal of 121121020123131 is 131321020121121.

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

It is not a de Polignac number, because 121121020123131 - 2¹⁰ = 121121020122107 is a prime.

It is a super-2 number, since 2×121121020123131² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 5767667624911 = 121121020123131 / (1 + 2 + 1 + 1 + 2 + 1 + 0 + 2 + 0 + 1 + 2 + 3 + 1 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121121020123098 and 121121020123107.

It is not an unprimeable number, because it can be changed into a prime (121121020123151) 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, 2883833812435 + ... + 2883833812476.

It is an arithmetic number, because the mean of its divisors is an integer number (23070670499648).

Almost surely, 2^{121121020123131} is an apocalyptic number.

121121020123131 is a deficient number, since it is larger than the sum of its proper divisors (63444343874053).

121121020123131 is an equidigital number, since it uses as much as digits as its factorization.

121121020123131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5767667624921.

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 121121020123131 its reverse (131321020121121), we get a palindrome (252442040244252).

The spelling of 121121020123131 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, twenty million, one hundred twenty-three thousand, one hundred thirty-one".