212021131229 has 2 divisors, whose sum is σ = 212021131230. Its totient is φ = 212021131228.

The previous prime is 212021131213. The next prime is 212021131243. The reversal of 212021131229 is 922131120212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 184895700025 + 27125431204 = 429995^2 + 164698^2 .

It is a cyclic number.

It is not a de Polignac number, because 212021131229 - 2⁴ = 212021131213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212021131198 and 212021131207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212021131249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106010565614 + 106010565615.

It is an arithmetic number, because the mean of its divisors is an integer number (106010565615).

Almost surely, 2^212021131229 is an apocalyptic number.

It is an amenable number.

212021131229 is a deficient number, since it is larger than the sum of its proper divisors (1).

212021131229 is an equidigital number, since it uses as much as digits as its factorization.

212021131229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 26.

The spelling of 212021131229 in words is "two hundred twelve billion, twenty-one million, one hundred thirty-one thousand, two hundred twenty-nine".