1111022120021 has 16 divisors (see below), whose sum is σ = 1218955687488. Its totient is φ = 1004250374400.

The previous prime is 1111022119969. The next prime is 1111022120027. The reversal of 1111022120021 is 1200212201111.

It is a cyclic number.

It is not a de Polignac number, because 1111022120021 - 2⁶ = 1111022119957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1111022119978 and 1111022120005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111022120027) 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, 3241181 + ... + 3567533.

It is an arithmetic number, because the mean of its divisors is an integer number (76184730468).

Almost surely, 2^{1111022120021} is an apocalyptic number.

1111022120021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1111022120021 is a deficient number, since it is larger than the sum of its proper divisors (107933567467).

1111022120021 is a wasteful number, since it uses less digits than its factorization.

1111022120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328132.

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

Adding to 1111022120021 its reverse (1200212201111), we get a palindrome (2311234321132).

The spelling of 1111022120021 in words is "one trillion, one hundred eleven billion, twenty-two million, one hundred twenty thousand, twenty-one".