1012011220021 has 8 divisors (see below), whose sum is σ = 1056021971904. Its totient is φ = 968001323520.

The previous prime is 1012011220019. The next prime is 1012011220081. The reversal of 1012011220021 is 1200221102101.

1012011220021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1012011220021 - 2¹ = 1012011220019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1012011219983 and 1012011220010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012011220081) 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, 3835381 + ... + 4090741.

It is an arithmetic number, because the mean of its divisors is an integer number (132002746488).

Almost surely, 2^{1012011220021} is an apocalyptic number.

It is an amenable number.

1012011220021 is a deficient number, since it is larger than the sum of its proper divisors (44010751883).

1012011220021 is a wasteful number, since it uses less digits than its factorization.

1012011220021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427691.

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

Adding to 1012011220021 its reverse (1200221102101), we get a palindrome (2212232322122).

The spelling of 1012011220021 in words is "one trillion, twelve billion, eleven million, two hundred twenty thousand, twenty-one".