1220021012011 has 8 divisors (see below), whose sum is σ = 1292766346080. Its totient is φ = 1147384499328.

The previous prime is 1220021011969. The next prime is 1220021012029. The reversal of 1220021012011 is 1102101200221.

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 1220021012011 - 2³¹ = 1217873528363 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1220021011982 and 1220021012000.

It is not an unprimeable number, because it can be changed into a prime (1220021012081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27182256 + ... + 27227101.

It is an arithmetic number, because the mean of its divisors is an integer number (161595793260).

Almost surely, 2^{1220021012011} is an apocalyptic number.

1220021012011 is a deficient number, since it is larger than the sum of its proper divisors (72745334069).

1220021012011 is a wasteful number, since it uses less digits than its factorization.

1220021012011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54410693.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1220021012011 its reverse (1102101200221), we get a palindrome (2322122212232).

The spelling of 1220021012011 in words is "one trillion, two hundred twenty billion, twenty-one million, twelve thousand, eleven".