101052421 has 2 divisors, whose sum is σ = 101052422. Its totient is φ = 101052420.

The previous prime is 101052407. The next prime is 101052449. The reversal of 101052421 is 124250101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89397025 + 11655396 = 9455^2 + 3414^2 .

It is a cyclic number.

It is not a de Polignac number, because 101052421 - 2⁷ = 101052293 is a prime.

It is a super-2 number, since 2×101052421² = 20423183579922482, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 101052395 and 101052404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101052461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50526210 + 50526211.

It is an arithmetic number, because the mean of its divisors is an integer number (50526211).

Almost surely, 2^101052421 is an apocalyptic number.

It is an amenable number.

101052421 is a deficient number, since it is larger than the sum of its proper divisors (1).

101052421 is an equidigital number, since it uses as much as digits as its factorization.

101052421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 101052421 is about 10052.4833250297. The cubic root of 101052421 is about 465.7815061838.

The spelling of 101052421 in words is "one hundred one million, fifty-two thousand, four hundred twenty-one".