100022222012021 has 8 divisors (see below), whose sum is σ = 100319469792984. Its totient is φ = 99724976870400.

The previous prime is 100022222011973. The next prime is 100022222012029. The reversal of 100022222012021 is 120210222220001.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 20124545909521 + 79897676102500 = 4486039^2 + 8938550^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100022222012021 is a prime.

It is a super-2 number, since 2×100022222012021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100022222012029) 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, 96439421 + ... + 97471053.

It is an arithmetic number, because the mean of its divisors is an integer number (12539933724123).

Almost surely, 2^{100022222012021} is an apocalyptic number.

It is an amenable number.

100022222012021 is a deficient number, since it is larger than the sum of its proper divisors (297247780963).

100022222012021 is a wasteful number, since it uses less digits than its factorization.

100022222012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1319671.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 100022222012021 its reverse (120210222220001), we get a palindrome (220232444232022).

The spelling of 100022222012021 in words is "one hundred trillion, twenty-two billion, two hundred twenty-two million, twelve thousand, twenty-one".