20210211011211 has 32 divisors (see below), whose sum is σ = 29289046893120. Its totient is φ = 12322013927424.

The previous prime is 20210211011143. The next prime is 20210211011261. The reversal of 20210211011211 is 11211011201202.

It is a happy number.

It is not a de Polignac number, because 20210211011211 - 2²² = 20210206816907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20210211011261) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 996090 + ... + 6435263.

It is an arithmetic number, because the mean of its divisors is an integer number (915282715410).

Almost surely, 2^{20210211011211} is an apocalyptic number.

20210211011211 is a deficient number, since it is larger than the sum of its proper divisors (9078835881909).

20210211011211 is a wasteful number, since it uses less digits than its factorization.

20210211011211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7432015.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 20210211011211 its reverse (11211011201202), we get a palindrome (31421222212413).

The spelling of 20210211011211 in words is "twenty trillion, two hundred ten billion, two hundred eleven million, eleven thousand, two hundred eleven".