20210123103210 has 48 divisors (see below), whose sum is σ = 53966490889896. Its totient is φ = 5243707615104.

The previous prime is 20210123103197. The next prime is 20210123103257. The reversal of 20210123103210 is 1230132101202.

20210123103210 is a `hidden beast` number, since 2 + 0 + 21 + 0 + 12 + 310 + 321 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 18914070638961 + 1296052464249 = 4349031^2 + 1138443^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3034549689 + ... + 3034556348.

Almost surely, 2^{20210123103210} is an apocalyptic number.

20210123103210 is an abundant number, since it is smaller than the sum of its proper divisors (33756367786686).

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

20210123103210 is a wasteful number, since it uses less digits than its factorization.

20210123103210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6069106087 (or 6069106084 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 20210123103210 its reverse (1230132101202), we get a palindrome (21440255204412).

The spelling of 20210123103210 in words is "twenty trillion, two hundred ten billion, one hundred twenty-three million, one hundred three thousand, two hundred ten".