1211121121022 has 4 divisors (see below), whose sum is σ = 1816681681536. Its totient is φ = 605560560510.

The previous prime is 1211121121003. The next prime is 1211121121037. The reversal of 1211121121022 is 2201211211121.

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

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, 302780280254 + ... + 302780280257.

It is an arithmetic number, because the mean of its divisors is an integer number (454170420384).

Almost surely, 2^{1211121121022} is an apocalyptic number.

1211121121022 is a deficient number, since it is larger than the sum of its proper divisors (605560560514).

1211121121022 is an equidigital number, since it uses as much as digits as its factorization.

1211121121022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605560560513.

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

Adding to 1211121121022 its reverse (2201211211121), we get a palindrome (3412332332143).

Subtracting 1211121121022 from its reverse (2201211211121), we obtain a palindrome (990090090099).

The spelling of 1211121121022 in words is "one trillion, two hundred eleven billion, one hundred twenty-one million, one hundred twenty-one thousand, twenty-two".