1021002111222 has 16 divisors (see below), whose sum is σ = 2042865492672. Its totient is φ = 340190492040.

The previous prime is 1021002111221. The next prime is 1021002111229. The reversal of 1021002111222 is 2221112001201.

It is a super-2 number, since 2×1021002111222² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021002111221) 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, 35870848 + ... + 35899299.

It is an arithmetic number, because the mean of its divisors is an integer number (127679093292).

Almost surely, 2^{1021002111222} is an apocalyptic number.

1021002111222 is an abundant number, since it is smaller than the sum of its proper divisors (1021863381450).

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

1021002111222 is a wasteful number, since it uses less digits than its factorization.

1021002111222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71772523.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1021002111222 its reverse (2221112001201), we get a palindrome (3242114112423).

The spelling of 1021002111222 in words is "one trillion, twenty-one billion, two million, one hundred eleven thousand, two hundred twenty-two".