1210120012101 has 128 divisors (see below), whose sum is σ = 2226490785792. Its totient is φ = 564195456000.

The previous prime is 1210120012081. The next prime is 1210120012117. The reversal of 1210120012101 is 1012100210121.

It is not a de Polignac number, because 1210120012101 - 2¹⁸ = 1210119749957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210120012181) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 207885771 + ... + 207891591.

It is an arithmetic number, because the mean of its divisors is an integer number (17394459264).

Almost surely, 2^{1210120012101} is an apocalyptic number.

1210120012101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1210120012101 is a deficient number, since it is larger than the sum of its proper divisors (1016370773691).

1210120012101 is a wasteful number, since it uses less digits than its factorization.

1210120012101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7763.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1210120012101 its reverse (1012100210121), we get a palindrome (2222220222222).

The spelling of 1210120012101 in words is "one trillion, two hundred ten billion, one hundred twenty million, twelve thousand, one hundred one".