1211232101022 has 32 divisors (see below), whose sum is σ = 2696602236960. Its totient is φ = 402997731840.

The previous prime is 1211232100999. The next prime is 1211232101089. The reversal of 1211232101022 is 2201012321121.

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 = 1211232100986 and 1211232101004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20701123 + ... + 20759550.

It is an arithmetic number, because the mean of its divisors is an integer number (84268819905).

Almost surely, 2^{1211232101022} is an apocalyptic number.

1211232101022 is an abundant number, since it is smaller than the sum of its proper divisors (1485370135938).

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

1211232101022 is a wasteful number, since it uses less digits than its factorization.

1211232101022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41461225 (or 41461219 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 1211232101022 its reverse (2201012321121), we get a palindrome (3412244422143).

The spelling of 1211232101022 in words is "one trillion, two hundred eleven billion, two hundred thirty-two million, one hundred one thousand, twenty-two".