121451120403100 has 18 divisors (see below), whose sum is σ = 263548931274944. Its totient is φ = 48580448161200.

The previous prime is 121451120403083. The next prime is 121451120403121. The reversal of 121451120403100 is 1304021154121.

It is a happy number.

It is a super-2 number, since 2×121451120403100² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 607255601916 + ... + 607255602115.

Almost surely, 2^{121451120403100} is an apocalyptic number.

121451120403100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121451120403100 is an abundant number, since it is smaller than the sum of its proper divisors (142097810871844).

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

121451120403100 is a wasteful number, since it uses less digits than its factorization.

121451120403100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1214511204045 (or 1214511204038 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

Adding to 121451120403100 its reverse (1304021154121), we get a palindrome (122755141557221).

The spelling of 121451120403100 in words is "one hundred twenty-one trillion, four hundred fifty-one billion, one hundred twenty million, four hundred three thousand, one hundred".