1021121412111 has 12 divisors (see below), whose sum is σ = 1514816749992. Its totient is φ = 662349023856.

The previous prime is 1021121412109. The next prime is 1021121412137. The reversal of 1021121412111 is 1112141211201.

1021121412111 is a `hidden beast` number, since 1 + 0 + 21 + 121 + 412 + 111 = 666.

It is not a de Polignac number, because 1021121412111 - 2¹ = 1021121412109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021121412811) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1533215001 + ... + 1533215666.

It is an arithmetic number, because the mean of its divisors is an integer number (126234729166).

Almost surely, 2^{1021121412111} is an apocalyptic number.

1021121412111 is a deficient number, since it is larger than the sum of its proper divisors (493695337881).

1021121412111 is a wasteful number, since it uses less digits than its factorization.

1021121412111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3066430710 (or 3066430707 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 1021121412111 its reverse (1112141211201), we get a palindrome (2133262623312).

The spelling of 1021121412111 in words is "one trillion, twenty-one billion, one hundred twenty-one million, four hundred twelve thousand, one hundred eleven".