1020121111222 has 16 divisors (see below), whose sum is σ = 1546162927344. Its totient is φ = 504738900000.

The previous prime is 1020121111169. The next prime is 1020121111223. The reversal of 1020121111222 is 2221111210201.

It is a junction number, because it is equal to n+sod(n) for n = 1020121111196 and 1020121111205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020121111223) 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, 980904 + ... + 1732747.

It is an arithmetic number, because the mean of its divisors is an integer number (96635182959).

Almost surely, 2^{1020121111222} is an apocalyptic number.

1020121111222 is a deficient number, since it is larger than the sum of its proper divisors (526041816122).

1020121111222 is a wasteful number, since it uses less digits than its factorization.

1020121111222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2715615.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1020121111222 its reverse (2221111210201), we get a palindrome (3241232321423).

The spelling of 1020121111222 in words is "one trillion, twenty billion, one hundred twenty-one million, one hundred eleven thousand, two hundred twenty-two".