11231020212121 has 8 divisors (see below), whose sum is σ = 11252722644864. Its totient is φ = 11209318651440.

The previous prime is 11231020212019. The next prime is 11231020212187. The reversal of 11231020212121 is 12121202013211.

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 11231020212121 - 2¹³ = 11231020203929 is a prime.

It is a super-2 number, since 2×11231020212121² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11231020219121) 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, 29457891 + ... + 29836711.

It is an arithmetic number, because the mean of its divisors is an integer number (1406590330608).

Almost surely, 2^{11231020212121} is an apocalyptic number.

It is an amenable number.

11231020212121 is a deficient number, since it is larger than the sum of its proper divisors (21702432743).

11231020212121 is an equidigital number, since it uses as much as digits as its factorization.

11231020212121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436031.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 11231020212121 its reverse (12121202013211), we get a palindrome (23352222225332).

The spelling of 11231020212121 in words is "eleven trillion, two hundred thirty-one billion, twenty million, two hundred twelve thousand, one hundred twenty-one".