1212120100010 has 32 divisors (see below), whose sum is σ = 2201994875520. Its totient is φ = 480364540992.

The previous prime is 1212120099979. The next prime is 1212120100019. The reversal of 1212120100010 is 100010212121.

It is a junction number, because it is equal to n+sod(n) for n = 1212120099964 and 1212120100000.

It is not an unprimeable number, because it can be changed into a prime (1212120100019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18723317 + ... + 18787943.

It is an arithmetic number, because the mean of its divisors is an integer number (68812339860).

Almost surely, 2^{1212120100010} is an apocalyptic number.

1212120100010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212120100010 is a deficient number, since it is larger than the sum of its proper divisors (989874775510).

1212120100010 is a wasteful number, since it uses less digits than its factorization.

1212120100010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81950.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1212120100010 its reverse (100010212121), we get a palindrome (1312130312131).

The spelling of 1212120100010 in words is "one trillion, two hundred twelve billion, one hundred twenty million, one hundred thousand, ten".