1021212022101 has 4 divisors (see below), whose sum is σ = 1361616029472. Its totient is φ = 680808014732.

The previous prime is 1021212022091. The next prime is 1021212022109. The reversal of 1021212022101 is 1012202121201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1021212022101 - 2¹³ = 1021212013909 is a prime.

It is a super-2 number, since 2×1021212022101² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021212022109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170202003681 + ... + 170202003686.

It is an arithmetic number, because the mean of its divisors is an integer number (340404007368).

Almost surely, 2^{1021212022101} is an apocalyptic number.

It is an amenable number.

1021212022101 is a deficient number, since it is larger than the sum of its proper divisors (340404007371).

1021212022101 is an equidigital number, since it uses as much as digits as its factorization.

1021212022101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340404007370.

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

Adding to 1021212022101 its reverse (1012202121201), we get a palindrome (2033414143302).

The spelling of 1021212022101 in words is "one trillion, twenty-one billion, two hundred twelve million, twenty-two thousand, one hundred one".