20011211022 has 32 divisors (see below), whose sum is σ = 43666406784. Its totient is φ = 6063228000.

The previous prime is 20011211021. The next prime is 20011211023. The reversal of 20011211022 is 22011211002.

It is an interprime number because it is at equal distance from previous prime (20011211021) and next prime (20011211023).

It is a junction number, because it is equal to n+sod(n) for n = 20011210989 and 20011211007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20011211021) 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, 703272 + ... + 731172.

It is an arithmetic number, because the mean of its divisors is an integer number (1364575212).

Almost surely, 2^20011211022 is an apocalyptic number.

20011211022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20011211022 is an abundant number, since it is smaller than the sum of its proper divisors (23655195762).

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

20011211022 is a wasteful number, since it uses less digits than its factorization.

20011211022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38784.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20011211022 its reverse (22011211002), we get a palindrome (42022422024).

The spelling of 20011211022 in words is "twenty billion, eleven million, two hundred eleven thousand, twenty-two".