20212010210121 has 16 divisors (see below), whose sum is σ = 28368126339840. Its totient is φ = 12765303412560.

The previous prime is 20212010210107. The next prime is 20212010210123. The reversal of 20212010210121 is 12101201021202.

It is not a de Polignac number, because 20212010210121 - 2²¹ = 20212008112969 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20212010210121.

It is not an unprimeable number, because it can be changed into a prime (20212010210123) 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, 1762086 + ... + 6597648.

It is an arithmetic number, because the mean of its divisors is an integer number (1773007896240).

Almost surely, 2^{20212010210121} is an apocalyptic number.

It is an amenable number.

20212010210121 is a deficient number, since it is larger than the sum of its proper divisors (8156116129719).

20212010210121 is a wasteful number, since it uses less digits than its factorization.

20212010210121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4908916.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20212010210121 its reverse (12101201021202), we get a palindrome (32313211231323).

The spelling of 20212010210121 in words is "twenty trillion, two hundred twelve billion, ten million, two hundred ten thousand, one hundred twenty-one".