1211201021022 has 32 divisors (see below), whose sum is σ = 2428419692160. Its totient is φ = 402731284320.

The previous prime is 1211201020937. The next prime is 1211201021053. The reversal of 1211201021022 is 2201201021121.

It is a junction number, because it is equal to n+sod(n) for n = 1211201020992 and 1211201021010.

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, 8947213 + ... + 9081575.

It is an arithmetic number, because the mean of its divisors is an integer number (75888115380).

Almost surely, 2^{1211201021022} is an apocalyptic number.

1211201021022 is an abundant number, since it is smaller than the sum of its proper divisors (1217218671138).

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

1211201021022 is a wasteful number, since it uses less digits than its factorization.

1211201021022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138088.

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

Adding to 1211201021022 its reverse (2201201021121), we get a palindrome (3412402042143).

Subtracting 1211201021022 from its reverse (2201201021121), we obtain a palindrome (990000000099).

The spelling of 1211201021022 in words is "one trillion, two hundred eleven billion, two hundred one million, twenty-one thousand, twenty-two".