10121124421 has 8 divisors (see below), whose sum is σ = 10788675200. Its totient is φ = 9467059680.

The previous prime is 10121124407. The next prime is 10121124427. The reversal of 10121124421 is 12442112101.

It is a happy number.

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 10121124421 - 2⁵ = 10121124389 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10121124427) 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, 3369960 + ... + 3372961.

It is an arithmetic number, because the mean of its divisors is an integer number (1348584400).

Almost surely, 2^10121124421 is an apocalyptic number.

It is an amenable number.

10121124421 is a deficient number, since it is larger than the sum of its proper divisors (667550779).

10121124421 is an equidigital number, since it uses as much as digits as its factorization.

10121124421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6743019.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 10121124421 its reverse (12442112101), we get a palindrome (22563236522).

The spelling of 10121124421 in words is "ten billion, one hundred twenty-one million, one hundred twenty-four thousand, four hundred twenty-one".