11211220212000 has 192 divisors, whose sum is σ = 36731379484800. Its totient is φ = 2989380172800.

The previous prime is 11211220211969. The next prime is 11211220212007. The reversal of 11211220212000 is 21202211211.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (11211220212007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 150430746 + ... + 150505254.

It is an arithmetic number, because the mean of its divisors is an integer number (191309268150).

Almost surely, 2^{11211220212000} is an apocalyptic number.

11211220212000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11211220212000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18365689742400).

11211220212000 is an abundant number, since it is smaller than the sum of its proper divisors (25520159272800).

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

11211220212000 is a wasteful number, since it uses less digits than its factorization.

11211220212000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87076 (or 87058 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 11211220212000 its reverse (21202211211), we get a palindrome (11232422423211).

The spelling of 11211220212000 in words is "eleven trillion, two hundred eleven billion, two hundred twenty million, two hundred twelve thousand".