1122221101020 has 96 divisors (see below), whose sum is σ = 3219459167232. Its totient is φ = 291920794368.

The previous prime is 1122221101019. The next prime is 1122221101051. The reversal of 1122221101020 is 201011222211.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1712989 + ... + 2275691.

It is an arithmetic number, because the mean of its divisors is an integer number (33536032992).

Almost surely, 2^{1122221101020} is an apocalyptic number.

1122221101020 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 1122221101020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1609729583616).

1122221101020 is an abundant number, since it is smaller than the sum of its proper divisors (2097238066212).

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

1122221101020 is a wasteful number, since it uses less digits than its factorization.

1122221101020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563531 (or 563529 counting only the distinct ones).

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

Adding to 1122221101020 its reverse (201011222211), we get a palindrome (1323232323231).

The spelling of 1122221101020 in words is "one trillion, one hundred twenty-two billion, two hundred twenty-one million, one hundred one thousand, twenty".