1211012211022 has 4 divisors (see below), whose sum is σ = 1816518316536. Its totient is φ = 605506105510.

The previous prime is 1211012211007. The next prime is 1211012211037. The reversal of 1211012211022 is 2201122101121.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1211012211007) and next prime (1211012211037).

It is a junction number, because it is equal to n+sod(n) for n = 1211012210987 and 1211012211005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302753052754 + ... + 302753052757.

It is an arithmetic number, because the mean of its divisors is an integer number (454129579134).

Almost surely, 2^{1211012211022} is an apocalyptic number.

1211012211022 is a deficient number, since it is larger than the sum of its proper divisors (605506105514).

1211012211022 is an equidigital number, since it uses as much as digits as its factorization.

1211012211022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605506105513.

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

Adding to 1211012211022 its reverse (2201122101121), we get a palindrome (3412134312143).

The spelling of 1211012211022 in words is "one trillion, two hundred eleven billion, twelve million, two hundred eleven thousand, twenty-two".