901211120212 has 24 divisors (see below), whose sum is σ = 1798344363816. Its totient is φ = 391476323328.

The previous prime is 901211120207. The next prime is 901211120269. The reversal of 901211120212 is 212021112109.

It can be written as a sum of positive squares in 4 ways, for example, as 154414417936 + 746796702276 = 392956^2 + 864174^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 509733913 + ... + 509735680.

It is an arithmetic number, because the mean of its divisors is an integer number (74931015159).

Almost surely, 2^901211120212 is an apocalyptic number.

It is an amenable number.

901211120212 is a deficient number, since it is larger than the sum of its proper divisors (897133243604).

901211120212 is a wasteful number, since it uses less digits than its factorization.

901211120212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1019469627 (or 1019469625 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 901211120212 in words is "nine hundred one billion, two hundred eleven million, one hundred twenty thousand, two hundred twelve".