101002661421 has 8 divisors (see below), whose sum is σ = 134691418560. Its totient is φ = 67324505952.

The previous prime is 101002661413. The next prime is 101002661423. The reversal of 101002661421 is 124166200101.

It is a happy number.

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

It is not a de Polignac number, because 101002661421 - 2³ = 101002661413 is a prime.

It is a super-2 number, since 2×101002661421² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 101002661391 and 101002661400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101002661423) 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, 2628160 + ... + 2666313.

It is an arithmetic number, because the mean of its divisors is an integer number (16836427320).

Almost surely, 2^101002661421 is an apocalyptic number.

It is an amenable number.

101002661421 is a deficient number, since it is larger than the sum of its proper divisors (33688757139).

101002661421 is an equidigital number, since it uses as much as digits as its factorization.

101002661421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5300835.

The product of its (nonzero) digits is 576, while the sum is 24.

Adding to 101002661421 its reverse (124166200101), we get a palindrome (225168861522).

The spelling of 101002661421 in words is "one hundred one billion, two million, six hundred sixty-one thousand, four hundred twenty-one".