1032211981 has 2 divisors, whose sum is σ = 1032211982. Its totient is φ = 1032211980.

The previous prime is 1032211907. The next prime is 1032212003. The reversal of 1032211981 is 1891122301.

1032211981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 600985225 + 431226756 = 24515^2 + 20766^2 .

It is an emirp because it is prime and its reverse (1891122301) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1032211981 - 2²⁵ = 998657549 is a prime.

It is a super-2 number, since 2×1032211981² = 2130923147439888722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1032211781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 516105990 + 516105991.

It is an arithmetic number, because the mean of its divisors is an integer number (516105991).

Almost surely, 2^1032211981 is an apocalyptic number.

It is an amenable number.

1032211981 is a deficient number, since it is larger than the sum of its proper divisors (1).

1032211981 is an equidigital number, since it uses as much as digits as its factorization.

1032211981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 1032211981 is about 32128.0559791594. The cubic root of 1032211981 is about 1010.6240567047.

The spelling of 1032211981 in words is "one billion, thirty-two million, two hundred eleven thousand, nine hundred eighty-one".