900000001010101 has 4 divisors (see below), whose sum is σ = 901337296703212. Its totient is φ = 898662705316992.

The previous prime is 900000001010087. The next prime is 900000001010147. The reversal of 900000001010101 is 101010100000009.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 588575450809476 + 311424550200625 = 24260574^2 + 17647225^2 .

It is a cyclic number.

It is not a de Polignac number, because 900000001010101 - 2⁹ = 900000001009589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (900000001010161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 668647845546 + ... + 668647846891.

It is an arithmetic number, because the mean of its divisors is an integer number (225334324175803).

Almost surely, 2^{900000001010101} is an apocalyptic number.

It is an amenable number.

900000001010101 is a deficient number, since it is larger than the sum of its proper divisors (1337295693111).

900000001010101 is a wasteful number, since it uses less digits than its factorization.

900000001010101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1337295693110.

The product of its (nonzero) digits is 9, while the sum is 13.

The spelling of 900000001010101 in words is "nine hundred trillion, one million, ten thousand, one hundred one".