1021612101 has 4 divisors (see below), whose sum is σ = 1362149472. Its totient is φ = 681074732.

The previous prime is 1021612063. The next prime is 1021612133. The reversal of 1021612101 is 1012161201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1021612101 - 2¹⁰ = 1021611077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021612301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170268681 + ... + 170268686.

It is an arithmetic number, because the mean of its divisors is an integer number (340537368).

Almost surely, 2^1021612101 is an apocalyptic number.

It is an amenable number.

1021612101 is a deficient number, since it is larger than the sum of its proper divisors (340537371).

1021612101 is an equidigital number, since it uses as much as digits as its factorization.

1021612101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340537370.

The product of its (nonzero) digits is 24, while the sum is 15.

The square root of 1021612101 is about 31962.6673010874. The cubic root of 1021612101 is about 1007.1527498536.

Adding to 1021612101 its reverse (1012161201), we get a palindrome (2033773302).

The spelling of 1021612101 in words is "one billion, twenty-one million, six hundred twelve thousand, one hundred one".