1210018150121 has 12 divisors (see below), whose sum is σ = 1332982192500. Its totient is φ = 1097566525440.

The previous prime is 1210018150111. The next prime is 1210018150153. The reversal of 1210018150121 is 1210518100121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 543817753600 + 666200396521 = 737440^2 + 816211^2 .

It is not a de Polignac number, because 1210018150121 - 2¹⁸ = 1210017887977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1210018150111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11081696 + ... + 11190353.

It is an arithmetic number, because the mean of its divisors is an integer number (111081849375).

Almost surely, 2^{1210018150121} is an apocalyptic number.

1210018150121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1210018150121 is a deficient number, since it is larger than the sum of its proper divisors (122964042379).

1210018150121 is a wasteful number, since it uses less digits than its factorization.

1210018150121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22272520 (or 22272509 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 23.

The spelling of 1210018150121 in words is "one trillion, two hundred ten billion, eighteen million, one hundred fifty thousand, one hundred twenty-one".