121220020001010 has 128 divisors (see below), whose sum is σ = 344342130462720. Its totient is φ = 26721843128064.

The previous prime is 121220020000999. The next prime is 121220020001027. The reversal of 121220020001010 is 10100020022121.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5818444 + ... + 16622103.

It is an arithmetic number, because the mean of its divisors is an integer number (2690172894240).

Almost surely, 2^{121220020001010} is an apocalyptic number.

121220020001010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121220020001010 is an abundant number, since it is smaller than the sum of its proper divisors (223122110461710).

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

121220020001010 is a wasteful number, since it uses less digits than its factorization.

121220020001010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22441480.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 121220020001010 its reverse (10100020022121), we get a palindrome (131320040023131).

The spelling of 121220020001010 in words is "one hundred twenty-one trillion, two hundred twenty billion, twenty million, one thousand, ten".