1211021110222 has 32 divisors (see below), whose sum is σ = 2287190214144. Its totient is φ = 467154852000.

The previous prime is 1211021110217. The next prime is 1211021110237. The reversal of 1211021110222 is 2220111201121.

It is a junction number, because it is equal to n+sod(n) for n = 1211021110196 and 1211021110205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38914018 + ... + 38945125.

It is an arithmetic number, because the mean of its divisors is an integer number (71474694192).

Almost surely, 2^{1211021110222} is an apocalyptic number.

1211021110222 is a deficient number, since it is larger than the sum of its proper divisors (1076169103922).

1211021110222 is a wasteful number, since it uses less digits than its factorization.

1211021110222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77859264.

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

Adding to 1211021110222 its reverse (2220111201121), we get a palindrome (3431132311343).

The spelling of 1211021110222 in words is "one trillion, two hundred eleven billion, twenty-one million, one hundred ten thousand, two hundred twenty-two".