1022101253 has 2 divisors, whose sum is σ = 1022101254. Its totient is φ = 1022101252.

The previous prime is 1022101247. The next prime is 1022101307. The reversal of 1022101253 is 3521012201.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 964599364 + 57501889 = 31058^2 + 7583^2 .

It is a cyclic number.

It is not a de Polignac number, because 1022101253 - 2¹² = 1022097157 is a prime.

It is a super-3 number, since 3×1022101253³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1022101153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511050626 + 511050627.

It is an arithmetic number, because the mean of its divisors is an integer number (511050627).

Almost surely, 2^1022101253 is an apocalyptic number.

It is an amenable number.

1022101253 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022101253 is an equidigital number, since it uses as much as digits as its factorization.

1022101253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 1022101253 is about 31970.3183124598. The cubic root of 1022101253 is about 1007.3134671404.

Adding to 1022101253 its reverse (3521012201), we get a palindrome (4543113454).

The spelling of 1022101253 in words is "one billion, twenty-two million, one hundred one thousand, two hundred fifty-three".