10101621 has 16 divisors (see below), whose sum is σ = 14611968. Its totient is φ = 6182400.

The previous prime is 10101617. The next prime is 10101653. The reversal of 10101621 is 12610101.

It is a happy number.

10101621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10101621 - 2² = 10101617 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10101597 and 10101606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10101821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 325 + ... + 4506.

It is an arithmetic number, because the mean of its divisors is an integer number (913248).

Almost surely, 2^10101621 is an apocalyptic number.

It is an amenable number.

10101621 is a deficient number, since it is larger than the sum of its proper divisors (4510347).

10101621 is a wasteful number, since it uses less digits than its factorization.

10101621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4892.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 10101621 is about 3178.3047368055. The cubic root of 10101621 is about 216.1707968382.

Adding to 10101621 its reverse (12610101), we get a palindrome (22711722).

The spelling of 10101621 in words is "ten million, one hundred one thousand, six hundred twenty-one".