121145351320 has 32 divisors (see below), whose sum is σ = 311516618400. Its totient is φ = 41535548928.

The previous prime is 121145351317. The next prime is 121145351381. The reversal of 121145351320 is 23153541121.

It is a super-3 number, since 3×121145351320³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216330705 + ... + 216331264.

It is an arithmetic number, because the mean of its divisors is an integer number (9734894325).

Almost surely, 2^121145351320 is an apocalyptic number.

121145351320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121145351320 is an abundant number, since it is smaller than the sum of its proper divisors (190371267080).

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

121145351320 is a wasteful number, since it uses less digits than its factorization.

121145351320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432661987 (or 432661983 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

Adding to 121145351320 its reverse (23153541121), we get a palindrome (144298892441).

The spelling of 121145351320 in words is "one hundred twenty-one billion, one hundred forty-five million, three hundred fifty-one thousand, three hundred twenty".