1026215101 has 2 divisors, whose sum is σ = 1026215102. Its totient is φ = 1026215100.

The previous prime is 1026215087. The next prime is 1026215107. The reversal of 1026215101 is 1015126201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1001722500 + 24492601 = 31650^2 + 4949^2 .

It is an emirp because it is prime and its reverse (1015126201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1026215101 - 2²³ = 1017826493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1026215107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 513107550 + 513107551.

It is an arithmetic number, because the mean of its divisors is an integer number (513107551).

Almost surely, 2^1026215101 is an apocalyptic number.

It is an amenable number.

1026215101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1026215101 is an equidigital number, since it uses as much as digits as its factorization.

1026215101 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 19.

The square root of 1026215101 is about 32034.5922558724. The cubic root of 1026215101 is about 1008.6631009618.

Subtracting from 1026215101 its reverse (1015126201), we obtain a square (11088900 = 3330²).

The spelling of 1026215101 in words is "one billion, twenty-six million, two hundred fifteen thousand, one hundred one".