1200210999957 has 6 divisors (see below), whose sum is σ = 1733638111062. Its totient is φ = 800140666632.

The previous prime is 1200210999947. The next prime is 1200210999973. The reversal of 1200210999957 is 7599990120021.

1200210999957 is a `hidden beast` number, since 1 + 200 + 210 + 99 + 99 + 57 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1059322626756 + 140888373201 = 1029234^2 + 375351^2 .

It is not a de Polignac number, because 1200210999957 - 2⁴ = 1200210999941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200210999947) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 66678388878 + ... + 66678388895.

It is an arithmetic number, because the mean of its divisors is an integer number (288939685177).

Almost surely, 2^{1200210999957} is an apocalyptic number.

It is an amenable number.

1200210999957 is a deficient number, since it is larger than the sum of its proper divisors (533427111105).

1200210999957 is a wasteful number, since it uses less digits than its factorization.

1200210999957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133356777779 (or 133356777776 counting only the distinct ones).

The product of its (nonzero) digits is 918540, while the sum is 54.

The spelling of 1200210999957 in words is "one trillion, two hundred billion, two hundred ten million, nine hundred ninety-nine thousand, nine hundred fifty-seven".