10121011021 has 8 divisors (see below), whose sum is σ = 11196612288. Its totient is φ = 9071328000.

The previous prime is 10121011009. The next prime is 10121011039. The reversal of 10121011021 is 12011012101.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10121011021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10121010989 and 10121011007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10121011091) 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, 6478740 + ... + 6480301.

It is an arithmetic number, because the mean of its divisors is an integer number (1399576536).

Almost surely, 2^10121011021 is an apocalyptic number.

10121011021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10121011021 is a deficient number, since it is larger than the sum of its proper divisors (1075601267).

10121011021 is a wasteful number, since it uses less digits than its factorization.

10121011021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12959123.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 10121011021 its reverse (12011012101), we get a palindrome (22132023122).

The spelling of 10121011021 in words is "ten billion, one hundred twenty-one million, eleven thousand, twenty-one".