10111212111020 has 24 divisors (see below), whose sum is σ = 21239182317024. Its totient is φ = 4043411152256.

The previous prime is 10111212110981. The next prime is 10111212111061. The reversal of 10111212111020 is 2011121211101.

It is a super-2 number, since 2×10111212111020² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10111212110986 and 10111212111004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67028537 + ... + 67179216.

It is an arithmetic number, because the mean of its divisors is an integer number (884965929876).

Almost surely, 2^{10111212111020} is an apocalyptic number.

10111212111020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10111212111020 is an abundant number, since it is smaller than the sum of its proper divisors (11127970206004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10111212111020 is a wasteful number, since it uses less digits than its factorization.

10111212111020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134211529 (or 134211527 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 10111212111020 its reverse (2011121211101), we get a palindrome (12122333322121).

The spelling of 10111212111020 in words is "ten trillion, one hundred eleven billion, two hundred twelve million, one hundred eleven thousand, twenty".