121142020023 has 24 divisors (see below), whose sum is σ = 178614408960. Its totient is φ = 79090914240.

The previous prime is 121142020003. The next prime is 121142020033. The reversal of 121142020023 is 320020241121.

It is a happy number.

121142020023 is a `hidden beast` number, since 1 + 21 + 1 + 420 + 200 + 23 = 666.

It is not a de Polignac number, because 121142020023 - 2¹⁰ = 121142018999 is a prime.

It is a super-3 number, since 3×121142020023³ (a number of 34 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121142019978 and 121142020005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121142020003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23338 + ... + 492776.

It is an arithmetic number, because the mean of its divisors is an integer number (7442267040).

Almost surely, 2^121142020023 is an apocalyptic number.

121142020023 is a deficient number, since it is larger than the sum of its proper divisors (57472388937).

121142020023 is a wasteful number, since it uses less digits than its factorization.

121142020023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470039 (or 470036 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 121142020023 its reverse (320020241121), we get a palindrome (441162261144).

The spelling of 121142020023 in words is "one hundred twenty-one billion, one hundred forty-two million, twenty thousand, twenty-three".