121220520310 has 32 divisors (see below), whose sum is σ = 223057152000. Its totient is φ = 47416767840.

The previous prime is 121220520307. The next prime is 121220520349. The reversal of 121220520310 is 13025022121.

It is a super-2 number, since 2×121220520310² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 425160 + ... + 650539.

It is an arithmetic number, because the mean of its divisors is an integer number (6970536000).

Almost surely, 2^121220520310 is an apocalyptic number.

121220520310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121220520310 is a deficient number, since it is larger than the sum of its proper divisors (101836631690).

121220520310 is a wasteful number, since it uses less digits than its factorization.

121220520310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075956.

The product of its (nonzero) digits is 240, while the sum is 19.

Adding to 121220520310 its reverse (13025022121), we get a palindrome (134245542431).

The spelling of 121220520310 in words is "one hundred twenty-one billion, two hundred twenty million, five hundred twenty thousand, three hundred ten".