1111211020000 has 60 divisors (see below), whose sum is σ = 2733745840056. Its totient is φ = 444484400000.

The previous prime is 1111211019959. The next prime is 1111211020009. The reversal of 1111211020000 is 201121111.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111211020009) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 27760276 + ... + 27800275.

Almost surely, 2^{1111211020000} is an apocalyptic number.

1111211020000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1111211020000 is an abundant number, since it is smaller than the sum of its proper divisors (1622534820056).

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

1111211020000 is an frugal number, since it uses more digits than its factorization.

1111211020000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55560581 (or 55560558 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1111211020000 its reverse (201121111), we get a palindrome (1111412141111).

The spelling of 1111211020000 in words is "one trillion, one hundred eleven billion, two hundred eleven million, twenty thousand".