120022001021 has 8 divisors (see below), whose sum is σ = 131693226840. Its totient is φ = 108699170112.

The previous prime is 120022000991. The next prime is 120022001051. The reversal of 120022001021 is 120100220021.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (120022000991) and next prime (120022001051).

It can be written as a sum of positive squares in 4 ways, for example, as 8740380100 + 111281620921 = 93490^2 + 333589^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-120022001021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120022000993 and 120022001011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120022001051) 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, 87098006 + ... + 87099383.

It is an arithmetic number, because the mean of its divisors is an integer number (16461653355).

Almost surely, 2^120022001021 is an apocalyptic number.

It is an amenable number.

120022001021 is a deficient number, since it is larger than the sum of its proper divisors (11671225819).

120022001021 is a wasteful number, since it uses less digits than its factorization.

120022001021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174197455.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 120022001021 its reverse (120100220021), we get a palindrome (240122221042).

The spelling of 120022001021 in words is "one hundred twenty billion, twenty-two million, one thousand, twenty-one".