20012202 has 48 divisors (see below), whose sum is σ = 50274432. Its totient is φ = 5634720.

The previous prime is 20012191. The next prime is 20012203. The reversal of 20012202 is 20221002.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (20012203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7828 + ... + 10064.

It is an arithmetic number, because the mean of its divisors is an integer number (1047384).

Almost surely, 2^20012202 is an apocalyptic number.

It is a pronic number, being equal to 4473×4474.

It is a practical number, because each smaller number is the sum of distinct divisors of 20012202, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25137216).

20012202 is an abundant number, since it is smaller than the sum of its proper divisors (30262230).

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

20012202 is a wasteful number, since it uses less digits than its factorization.

20012202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2323 (or 2320 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 20012202 is about 4473.4999720577. The cubic root of 20012202 is about 271.4969526433.

Adding to 20012202 its reverse (20221002), we get a palindrome (40233204).

The spelling of 20012202 in words is "twenty million, twelve thousand, two hundred two".