101621220709 has 8 divisors (see below), whose sum is σ = 101895906528. Its totient is φ = 101346779760.

The previous prime is 101621220691. The next prime is 101621220749. The reversal of 101621220709 is 907022126101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 101621220709 - 2¹¹ = 101621218661 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 (101621220749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 785659 + ... + 905815.

It is an arithmetic number, because the mean of its divisors is an integer number (12736988316).

Almost surely, 2^101621220709 is an apocalyptic number.

It is an amenable number.

101621220709 is a deficient number, since it is larger than the sum of its proper divisors (274685819).

101621220709 is a wasteful number, since it uses less digits than its factorization.

101621220709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122435.

The product of its (nonzero) digits is 3024, while the sum is 31.

The spelling of 101621220709 in words is "one hundred one billion, six hundred twenty-one million, two hundred twenty thousand, seven hundred nine".