212102211953 has 2 divisors, whose sum is σ = 212102211954. Its totient is φ = 212102211952.

The previous prime is 212102211949. The next prime is 212102212039. The reversal of 212102211953 is 359112201212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 155955487744 + 56146724209 = 394912^2 + 236953^2 .

It is a cyclic number.

It is not a de Polignac number, because 212102211953 - 2² = 212102211949 is a prime.

It is not a weakly prime, because it can be changed into another prime (212102211943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106051105976 + 106051105977.

It is an arithmetic number, because the mean of its divisors is an integer number (106051105977).

Almost surely, 2^212102211953 is an apocalyptic number.

It is an amenable number.

212102211953 is a deficient number, since it is larger than the sum of its proper divisors (1).

212102211953 is an equidigital number, since it uses as much as digits as its factorization.

212102211953 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 29.

The spelling of 212102211953 in words is "two hundred twelve billion, one hundred two million, two hundred eleven thousand, nine hundred fifty-three".