21011020001122 has 16 divisors (see below), whose sum is σ = 31728549946752. Its totient is φ = 10434851164800.

The previous prime is 21011020001087. The next prime is 21011020001129. The reversal of 21011020001122 is 22110002011012.

It is a super-2 number, since 2×21011020001122² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21011020001129) 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, 708783 + ... + 6521074.

It is an arithmetic number, because the mean of its divisors is an integer number (1983034371672).

Almost surely, 2^{21011020001122} is an apocalyptic number.

21011020001122 is a deficient number, since it is larger than the sum of its proper divisors (10717529945630).

21011020001122 is a wasteful number, since it uses less digits than its factorization.

21011020001122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7239633.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21011020001122 its reverse (22110002011012), we get a palindrome (43121022012134).

The spelling of 21011020001122 in words is "twenty-one trillion, eleven billion, twenty million, one thousand, one hundred twenty-two".