1220000011021 has 8 divisors (see below), whose sum is σ = 1359226318464. Its totient is φ = 1085493239520.

The previous prime is 1220000010947. The next prime is 1220000011067. The reversal of 1220000011021 is 1201100000221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1220000011021 - 2¹³ = 1220000002829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1220000010989 and 1220000011007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220000011121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1179883440 + ... + 1179884473.

It is an arithmetic number, because the mean of its divisors is an integer number (169903289808).

Almost surely, 2^{1220000011021} is an apocalyptic number.

1220000011021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1220000011021 is a deficient number, since it is larger than the sum of its proper divisors (139226307443).

1220000011021 is a wasteful number, since it uses less digits than its factorization.

1220000011021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2359767971.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1220000011021 its reverse (1201100000221), we get a palindrome (2421100011242).

The spelling of 1220000011021 in words is "one trillion, two hundred twenty billion, eleven thousand, twenty-one".