1111012121000 has 64 divisors (see below), whose sum is σ = 2600153974080. Its totient is φ = 444338932800.

The previous prime is 1111012120963. The next prime is 1111012121003. The reversal of 1111012121000 is 1212101111.

It is not an unprimeable number, because it can be changed into a prime (1111012121003) 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, 6964127 + ... + 7121873.

It is an arithmetic number, because the mean of its divisors is an integer number (40627405845).

Almost surely, 2^{1111012121000} is an apocalyptic number.

1111012121000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1111012121000 is an abundant number, since it is smaller than the sum of its proper divisors (1489141853080).

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

1111012121000 is a wasteful number, since it uses less digits than its factorization.

1111012121000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164811 (or 164797 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 1111012121000 its reverse (1212101111), we get a palindrome (1112224222111).

It can be divided in two parts, 11 and 11012121000, that added together give a palindrome (11012121011).

The spelling of 1111012121000 in words is "one trillion, one hundred eleven billion, twelve million, one hundred twenty-one thousand".