1111010021121 has 96 divisors (see below), whose sum is σ = 2091140997120. Its totient is φ = 509588576640.

The previous prime is 1111010021111. The next prime is 1111010021123. The reversal of 1111010021121 is 1211200101111.

It is not a de Polignac number, because 1111010021121 - 2¹¹ = 1111010019073 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1111010021097 and 1111010021106.

It is not an unprimeable number, because it can be changed into a prime (1111010021123) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 28600 + ... + 1490918.

It is an arithmetic number, because the mean of its divisors is an integer number (21782718720).

Almost surely, 2^{1111010021121} is an apocalyptic number.

1111010021121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1111010021121 is a deficient number, since it is larger than the sum of its proper divisors (980130975999).

1111010021121 is a wasteful number, since it uses less digits than its factorization.

1111010021121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1462387 (or 1462376 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 1111010021121 its reverse (1211200101111), we get a palindrome (2322210122232).

The spelling of 1111010021121 in words is "one trillion, one hundred eleven billion, ten million, twenty-one thousand, one hundred twenty-one".