1011211121022 has 32 divisors (see below), whose sum is σ = 2110452503040. Its totient is φ = 322400036640.

The previous prime is 1011211121021. The next prime is 1011211121051. The reversal of 1011211121022 is 2201211121101.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1011211120992 and 1011211121010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011211121021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2996004 + ... + 3316392.

It is an arithmetic number, because the mean of its divisors is an integer number (65951640720).

Almost surely, 2^{1011211121022} is an apocalyptic number.

1011211121022 is an abundant number, since it is smaller than the sum of its proper divisors (1099241382018).

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

1011211121022 is a wasteful number, since it uses less digits than its factorization.

1011211121022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343288.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1011211121022 its reverse (2201211121101), we get a palindrome (3212422242123).

The spelling of 1011211121022 in words is "one trillion, eleven billion, two hundred eleven million, one hundred twenty-one thousand, twenty-two".