1121212211012 has 6 divisors (see below), whose sum is σ = 1962121369278. Its totient is φ = 560606105504.

The previous prime is 1121212210999. The next prime is 1121212211017. The reversal of 1121212211012 is 2101122121211.

It can be written as a sum of positive squares in only one way, i.e., 824507584576 + 296704626436 = 908024^2 + 544706^2 .

It is a super-2 number, since 2×1121212211012² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1121212211017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140151526373 + ... + 140151526380.

It is an arithmetic number, because the mean of its divisors is an integer number (327020228213).

Almost surely, 2^{1121212211012} is an apocalyptic number.

It is an amenable number.

1121212211012 is a deficient number, since it is larger than the sum of its proper divisors (840909158266).

1121212211012 is a wasteful number, since it uses less digits than its factorization.

1121212211012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280303052757 (or 280303052755 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 1121212211012 its reverse (2101122121211), we get a palindrome (3222334332223).

The spelling of 1121212211012 in words is "one trillion, one hundred twenty-one billion, two hundred twelve million, two hundred eleven thousand, twelve".