101797421 has 12 divisors (see below), whose sum is σ = 117784800. Its totient is φ = 87670440.

The previous prime is 101797417. The next prime is 101797427. The reversal of 101797421 is 124797101.

It is not a de Polignac number, because 101797421 - 2² = 101797417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101797427) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19841 + ... + 24438.

It is an arithmetic number, because the mean of its divisors is an integer number (9815400).

Almost surely, 2^101797421 is an apocalyptic number.

101797421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

101797421 is a deficient number, since it is larger than the sum of its proper divisors (15987379).

101797421 is a wasteful number, since it uses less digits than its factorization.

101797421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44320 (or 44309 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 32.

The square root of 101797421 is about 10089.4707988080. The cubic root of 101797421 is about 466.9233489830.

The spelling of 101797421 in words is "one hundred one million, seven hundred ninety-seven thousand, four hundred twenty-one".