121251433442410 has 8 divisors (see below), whose sum is σ = 218252580196356. Its totient is φ = 48500573376960.

The previous prime is 121251433442387. The next prime is 121251433442501. The reversal of 121251433442410 is 14244334152121.

It can be written as a sum of positive squares in 2 ways, for example, as 112938931416529 + 8312502025881 = 10627273^2 + 2883141^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×121251433442410² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121251433442410.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6062571672111 + ... + 6062571672130.

Almost surely, 2^{121251433442410} is an apocalyptic number.

121251433442410 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121251433442410 is a deficient number, since it is larger than the sum of its proper divisors (97001146753946).

121251433442410 is a wasteful number, since it uses less digits than its factorization.

121251433442410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12125143344248.

The product of its (nonzero) digits is 92160, while the sum is 37.

Adding to 121251433442410 its reverse (14244334152121), we get a palindrome (135495767594531).

The spelling of 121251433442410 in words is "one hundred twenty-one trillion, two hundred fifty-one billion, four hundred thirty-three million, four hundred forty-two thousand, four hundred ten".