2101221100022 has 32 divisors (see below), whose sum is σ = 3467267821440. Its totient is φ = 947097515520.

The previous prime is 2101221100021. The next prime is 2101221100133. The reversal of 2101221100022 is 2200011221012.

It is a super-2 number, since 2×2101221100022² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101221100021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 927254 + ... + 2249942.

It is an arithmetic number, because the mean of its divisors is an integer number (108352119420).

Almost surely, 2^{2101221100022} is an apocalyptic number.

2101221100022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2101221100022 is a deficient number, since it is larger than the sum of its proper divisors (1366046721418).

2101221100022 is a wasteful number, since it uses less digits than its factorization.

2101221100022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1323308.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2101221100022 its reverse (2200011221012), we get a palindrome (4301232321034).

The spelling of 2101221100022 in words is "two trillion, one hundred one billion, two hundred twenty-one million, one hundred thousand, twenty-two".