1210012112101 has 8 divisors (see below), whose sum is σ = 1317731428440. Its totient is φ = 1104384433152.

The previous prime is 1210012112063. The next prime is 1210012112117. The reversal of 1210012112101 is 1012112100121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 163922955876 + 1046089156225 = 404874^2 + 1022785^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1210012112101 - 2¹⁷ = 1210011981029 is a prime.

It is a super-2 number, since 2×1210012112101² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210012112201) 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, 522908140 + ... + 522910453.

It is an arithmetic number, because the mean of its divisors is an integer number (164716428555).

Almost surely, 2^{1210012112101} is an apocalyptic number.

It is an amenable number.

1210012112101 is a deficient number, since it is larger than the sum of its proper divisors (107719316339).

1210012112101 is a wasteful number, since it uses less digits than its factorization.

1210012112101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1045818695.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1210012112101 its reverse (1012112100121), we get a palindrome (2222124212222).

The spelling of 1210012112101 in words is "one trillion, two hundred ten billion, twelve million, one hundred twelve thousand, one hundred one".