121000020010 has 16 divisors (see below), whose sum is σ = 217805023872. Its totient is φ = 48398899600.

The previous prime is 121000019971. The next prime is 121000020019. The reversal of 121000020010 is 10020000121.

It is a junction number, because it is equal to n+sod(n) for n = 121000019975 and 121000020002.

It is not an unprimeable number, because it can be changed into a prime (121000020019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 431715 + ... + 654505.

It is an arithmetic number, because the mean of its divisors is an integer number (13612813992).

Almost surely, 2^121000020010 is an apocalyptic number.

121000020010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121000020010 is a deficient number, since it is larger than the sum of its proper divisors (96805003862).

121000020010 is a wasteful number, since it uses less digits than its factorization.

121000020010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277109.

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 121000020010 its reverse (10020000121), we get a palindrome (131020020131).

The spelling of 121000020010 in words is "one hundred twenty-one billion, twenty thousand, ten".