10111212021222 has 24 divisors (see below), whose sum is σ = 23592828050064. Its totient is φ = 3111142160304.

The previous prime is 10111212021199. The next prime is 10111212021329. The reversal of 10111212021222 is 22212021211101.

10111212021222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 10111212021195 and 10111212021204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21605153658 + ... + 21605154125.

It is an arithmetic number, because the mean of its divisors is an integer number (983034502086).

Almost surely, 2^{10111212021222} is an apocalyptic number.

10111212021222 is an abundant number, since it is smaller than the sum of its proper divisors (13481616028842).

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

10111212021222 is a wasteful number, since it uses less digits than its factorization.

10111212021222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43210307804 (or 43210307801 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 10111212021222 its reverse (22212021211101), we get a palindrome (32323233232323).

The spelling of 10111212021222 in words is "ten trillion, one hundred eleven billion, two hundred twelve million, twenty-one thousand, two hundred twenty-two".