1211011121022 has 32 divisors (see below), whose sum is σ = 2451303848448. Its totient is φ = 398790505536.

The previous prime is 1211011121009. The next prime is 1211011121027. The reversal of 1211011121022 is 2201211101121.

It is a happy number.

It is a super-2 number, since 2×1211011121022² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1211011120992 and 1211011121010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211011121027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20998258 + ... + 21055850.

It is an arithmetic number, because the mean of its divisors is an integer number (76603245264).

Almost surely, 2^{1211011121022} is an apocalyptic number.

1211011121022 is an abundant number, since it is smaller than the sum of its proper divisors (1240292727426).

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

1211011121022 is a wasteful number, since it uses less digits than its factorization.

1211011121022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99904.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1211011121022 its reverse (2201211101121), we get a palindrome (3412222222143).

The spelling of 1211011121022 in words is "one trillion, two hundred eleven billion, eleven million, one hundred twenty-one thousand, twenty-two".