20010021001212 has 24 divisors (see below), whose sum is σ = 50934598912512. Its totient is φ = 6063642727600.

The previous prime is 20010021001193. The next prime is 20010021001259. The reversal of 20010021001212 is 21210012001002.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75795533964 + ... + 75795534227.

It is an arithmetic number, because the mean of its divisors is an integer number (2122274954688).

Almost surely, 2^{20010021001212} is an apocalyptic number.

20010021001212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20010021001212 is an abundant number, since it is smaller than the sum of its proper divisors (30924577911300).

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

20010021001212 is a wasteful number, since it uses less digits than its factorization.

20010021001212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151591068209 (or 151591068207 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20010021001212 its reverse (21210012001002), we get a palindrome (41220033002214).

The spelling of 20010021001212 in words is "twenty trillion, ten billion, twenty-one million, one thousand, two hundred twelve".