211930250852 has 24 divisors (see below), whose sum is σ = 374574566520. Its totient is φ = 104910474240.

The previous prime is 211930250843. The next prime is 211930250897. The reversal of 211930250852 is 258052039112.

It can be written as a sum of positive squares in 4 ways, for example, as 76223479396 + 135706771456 = 276086^2 + 368384^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 366452 + ... + 747092.

It is an arithmetic number, because the mean of its divisors is an integer number (15607273605).

Almost surely, 2^211930250852 is an apocalyptic number.

It is an amenable number.

211930250852 is a deficient number, since it is larger than the sum of its proper divisors (162644315668).

211930250852 is a wasteful number, since it uses less digits than its factorization.

211930250852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382031 (or 382029 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 38.

Adding to 211930250852 its reverse (258052039112), we get a palindrome (469982289964).

The spelling of 211930250852 in words is "two hundred eleven billion, nine hundred thirty million, two hundred fifty thousand, eight hundred fifty-two".