211222221201138 has 16 divisors (see below), whose sum is σ = 482793648459840. Its totient is φ = 60349206057456.

The previous prime is 211222221201071. The next prime is 211222221201139. The reversal of 211222221201138 is 831102122222112.

It is a super-2 number, since 2×211222221201138² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211222221201139) 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, 2514550252353 + ... + 2514550252436.

It is an arithmetic number, because the mean of its divisors is an integer number (30174603028740).

Almost surely, 2^{211222221201138} is an apocalyptic number.

211222221201138 is an abundant number, since it is smaller than the sum of its proper divisors (271571427258702).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211222221201138 is a wasteful number, since it uses less digits than its factorization.

211222221201138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5029100504801.

The product of its (nonzero) digits is 3072, while the sum is 30.

The spelling of 211222221201138 in words is "two hundred eleven trillion, two hundred twenty-two billion, two hundred twenty-one million, two hundred one thousand, one hundred thirty-eight".