901220101011101 has 4 divisors (see below), whose sum is σ = 901220505714972. Its totient is φ = 901219696307232.

The previous prime is 901220101011077. The next prime is 901220101011103. The reversal of 901220101011101 is 101110101022109.

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 278017307170201 + 623202793840900 = 16673851^2 + 24964030^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-901220101011101 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 (901220101011103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198993056 + ... + 203471561.

It is an arithmetic number, because the mean of its divisors is an integer number (225305126428743).

Almost surely, 2^{901220101011101} is an apocalyptic number.

It is an amenable number.

901220101011101 is a deficient number, since it is larger than the sum of its proper divisors (404703871).

901220101011101 is a wasteful number, since it uses less digits than its factorization.

901220101011101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404703870.

The product of its (nonzero) digits is 36, while the sum is 20.

The spelling of 901220101011101 in words is "nine hundred one trillion, two hundred twenty billion, one hundred one million, eleven thousand, one hundred one".