121353445510 has 32 divisors (see below), whose sum is σ = 238318682112. Its totient is φ = 44123962080.

The previous prime is 121353445483. The next prime is 121353445513. The reversal of 121353445510 is 15544353121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121353445513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1121659 + ... + 1225081.

It is an arithmetic number, because the mean of its divisors is an integer number (7447458816).

Almost surely, 2^121353445510 is an apocalyptic number.

121353445510 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121353445510 is a deficient number, since it is larger than the sum of its proper divisors (116965236602).

121353445510 is a wasteful number, since it uses less digits than its factorization.

121353445510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114108.

The product of its (nonzero) digits is 36000, while the sum is 34.

Adding to 121353445510 its reverse (15544353121), we get a palindrome (136897798631).

The spelling of 121353445510 in words is "one hundred twenty-one billion, three hundred fifty-three million, four hundred forty-five thousand, five hundred ten".