121015542123040 has 48 divisors (see below), whose sum is σ = 287181277625088. Its totient is φ = 48189148598016.

The previous prime is 121015542123011. The next prime is 121015542123043. The reversal of 121015542123040 is 40321245510121.

It is a super-2 number, since 2×121015542123040² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121015542122993 and 121015542123011.

It is not an unprimeable number, because it can be changed into a prime (121015542123043) 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, 1695809922 + ... + 1695881281.

It is an arithmetic number, because the mean of its divisors is an integer number (5982943283856).

Almost surely, 2^{121015542123040} is an apocalyptic number.

121015542123040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121015542123040 is an abundant number, since it is smaller than the sum of its proper divisors (166165735502048).

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

121015542123040 is a wasteful number, since it uses less digits than its factorization.

121015542123040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3391691441 (or 3391691433 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 31.

Adding to 121015542123040 its reverse (40321245510121), we get a palindrome (161336787633161).

The spelling of 121015542123040 in words is "one hundred twenty-one trillion, fifteen billion, five hundred forty-two million, one hundred twenty-three thousand, forty".