121210000001010 has 48 divisors (see below), whose sum is σ = 315226662806016. Its totient is φ = 32314393558944.

The previous prime is 121210000000987. The next prime is 121210000001047. The reversal of 121210000001010 is 10100000012121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 121210000000983 and 121210000001001.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 172002834 + ... + 172706093.

It is an arithmetic number, because the mean of its divisors is an integer number (6567222141792).

Almost surely, 2^{121210000001010} is an apocalyptic number.

121210000001010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121210000001010 is an abundant number, since it is smaller than the sum of its proper divisors (194016662805006).

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

121210000001010 is a wasteful number, since it uses less digits than its factorization.

121210000001010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344712847 (or 344712844 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 121210000001010 its reverse (10100000012121), we get a palindrome (131310000013131).

The spelling of 121210000001010 in words is "one hundred twenty-one trillion, two hundred ten billion, one thousand, ten".