121023121323220 has 96 divisors (see below), whose sum is σ = 295577266924800. Its totient is φ = 41286983215104.

The previous prime is 121023121323179. The next prime is 121023121323233. The reversal of 121023121323220 is 22323121320121.

It is a super-2 number, since 2×121023121323220² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 407117275 + ... + 407414434.

It is an arithmetic number, because the mean of its divisors is an integer number (3078929863800).

Almost surely, 2^{121023121323220} is an apocalyptic number.

121023121323220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121023121323220 is an abundant number, since it is smaller than the sum of its proper divisors (174554145601580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121023121323220 is a wasteful number, since it uses less digits than its factorization.

121023121323220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814531777 (or 814531775 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 121023121323220 its reverse (22323121320121), we get a palindrome (143346242643341).

The spelling of 121023121323220 in words is "one hundred twenty-one trillion, twenty-three billion, one hundred twenty-one million, three hundred twenty-three thousand, two hundred twenty".