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BaseRepresentation
bin10011100101000001…
…010101010100100010
32000021001222110120120
4103211001111110202
5321023140413442
613354002421110
71342643522046
oct234501252442
960231873516
1021022201122
118a0853693a
1240a8361796
131ca03b9080
141035d72026
158308854ec
hex4e5055522

21022201122 has 128 divisors (see below), whose sum is σ = 50646435840. Its totient is φ = 5746775040.

The previous prime is 21022201111. The next prime is 21022201153. The reversal of 21022201122 is 22110222012.

Adding to 21022201122 its reverse (22110222012), we get a palindrome (43132423134).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7833993 + ... + 7836675.

It is an arithmetic number, because the mean of its divisors is an integer number (395675280).

Almost surely, 221022201122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21022201122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25323217920).

21022201122 is an abundant number, since it is smaller than the sum of its proper divisors (29624234718).

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

21022201122 is a wasteful number, since it uses less digits than its factorization.

21022201122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3048.

The product of its (nonzero) digits is 64, while the sum is 15.

The spelling of 21022201122 in words is "twenty-one billion, twenty-two million, two hundred one thousand, one hundred twenty-two".