1022001100021 has 8 divisors (see below), whose sum is σ = 1115002569888. Its totient is φ = 929015010000.

The previous prime is 1022001100007. The next prime is 1022001100027. The reversal of 1022001100021 is 1200011002201.

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

It is not a de Polignac number, because 1022001100021 - 2⁷ = 1022001099893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1022001099980 and 1022001100007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022001100027) 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, 3705795 + ... + 3972016.

It is an arithmetic number, because the mean of its divisors is an integer number (139375321236).

Almost surely, 2^{1022001100021} is an apocalyptic number.

1022001100021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1022001100021 is a deficient number, since it is larger than the sum of its proper divisors (93001469867).

1022001100021 is a wasteful number, since it uses less digits than its factorization.

1022001100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7689923.

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

Adding to 1022001100021 its reverse (1200011002201), we get a palindrome (2222012102222).

The spelling of 1022001100021 in words is "one trillion, twenty-two billion, one million, one hundred thousand, twenty-one".