20012122010 has 32 divisors (see below), whose sum is σ = 36991648512. Its totient is φ = 7791215040.

The previous prime is 20012122007. The next prime is 20012122043. The reversal of 20012122010 is 1022121002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20012121982 and 20012122000.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32552 + ... + 202691.

It is an arithmetic number, because the mean of its divisors is an integer number (1155989016).

Almost surely, 2^20012122010 is an apocalyptic number.

20012122010 is a deficient number, since it is larger than the sum of its proper divisors (16979526502).

20012122010 is a wasteful number, since it uses less digits than its factorization.

20012122010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235478.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20012122010 its reverse (1022121002), we get a palindrome (21034243012).

The spelling of 20012122010 in words is "twenty billion, twelve million, one hundred twenty-two thousand, ten".