121210020010 has 16 divisors (see below), whose sum is σ = 227664038016. Its totient is φ = 46376007568.

The previous prime is 121210020007. The next prime is 121210020013. The reversal of 121210020010 is 10020012121.

It is an interprime number because it is at equal distance from previous prime (121210020007) and next prime (121210020013).

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (121210020013) 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, 263499814 + ... + 263500273.

It is an arithmetic number, because the mean of its divisors is an integer number (14229002376).

Almost surely, 2^121210020010 is an apocalyptic number.

121210020010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121210020010 is a deficient number, since it is larger than the sum of its proper divisors (106454018006).

121210020010 is a wasteful number, since it uses less digits than its factorization.

121210020010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527000117.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 121210020010 its reverse (10020012121), we get a palindrome (131230032131).

The spelling of 121210020010 in words is "one hundred twenty-one billion, two hundred ten million, twenty thousand, ten".