10121021331 has 8 divisors (see below), whose sum is σ = 13495172544. Its totient is φ = 6747108840.

The previous prime is 10121021321. The next prime is 10121021341. The reversal of 10121021331 is 13312012101.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (10121021321) and next prime (10121021341).

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

It is not a de Polignac number, because 10121021331 - 2¹⁷ = 10120890259 is a prime.

It is a super-2 number, since 2×10121021331² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10121021331.

It is not an unprimeable number, because it can be changed into a prime (10121021311) 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, 101220 + ... + 174606.

It is an arithmetic number, because the mean of its divisors is an integer number (1686896568).

Almost surely, 2^10121021331 is an apocalyptic number.

10121021331 is a deficient number, since it is larger than the sum of its proper divisors (3374151213).

10121021331 is an equidigital number, since it uses as much as digits as its factorization.

10121021331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119361.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 10121021331 its reverse (13312012101), we get a palindrome (23433033432).

The spelling of 10121021331 in words is "ten billion, one hundred twenty-one million, twenty-one thousand, three hundred thirty-one".