1121010012221 has 32 divisors (see below), whose sum is σ = 1299607632000. Its totient is φ = 956257505280.

The previous prime is 1121010012217. The next prime is 1121010012223. The reversal of 1121010012221 is 1222100101211.

It is not a de Polignac number, because 1121010012221 - 2² = 1121010012217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1121010012196 and 1121010012205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121010012223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10941785 + ... + 11043761.

It is an arithmetic number, because the mean of its divisors is an integer number (40612738500).

Almost surely, 2^{1121010012221} is an apocalyptic number.

1121010012221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1121010012221 is a deficient number, since it is larger than the sum of its proper divisors (178597619779).

1121010012221 is a wasteful number, since it uses less digits than its factorization.

1121010012221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102509.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1121010012221 its reverse (1222100101211), we get a palindrome (2343110113432).

The spelling of 1121010012221 in words is "one trillion, one hundred twenty-one billion, ten million, twelve thousand, two hundred twenty-one".